That daunting list of threats may leave you feeling demoralised, certainly weary. The good news is you don't have to fight the onslaught on your own. There are some handy software tools you can use to help secure your system. Keep in mind, though, that even with excellent software defences installed you'll need to keep your guard up.
While some good security tools are free, be prepared to spend money on securing your computer. This is one area where it doesn't pay to be penny pinching.
So, what should you pack in your security and privacy toolkit? Here's a good starting list:
Anti-virus software. There are some useful free anti-virus tools, but over the years they have not proved to be the best line of defence. You're better off going with one of the well-known products with a proven track record, such as PC-Cillin, Norton AntiVirus 2005, Eset NOD32, and Kaspersky Anti-Virus. Make sure your anti-virus software protects your email and guards against Web site threats, as well as monitoring your system for infection from other sources.
Use your anti-virus program's update feature at least a couple of times each week. (Click the image to see a full-sized screenshot.)
Anti-spyware and anti-key-logging software. When it comes to anti-spyware tools, adopt the boots-and-braces approach. Because of the rapid proliferation of spyware threats, no software program can keep up with the flow, so it pays to install at least two anti-spyware programs. The good news is, two of the best tools available are free, Spybot Search & Destroy and Ad Aware. Note, though, that the freeware version of Ad Aware is significantly less aggressive than the commercial version. If you're really worried about spyware (and you should be), buy a copy of Ad Aware SE Professional or the equally good Spy Sweeper 3.0.
If you use Internet Explorer, a risky activity in itself, install the free BHODemon as well, to stop unwanted programs installing within IE.
A spam blocker. Top choices are Ella, EmailProtect and Norton AntiSpam. If you use Microsoft Outlook as your email client, upgrade to version 2003 if possible; it has very good built-in junk mail handling. Thunderbird email also has decent junk filters.
A firewall. A firewall monitors incoming and outgoing traffic between your computer and the Internet, and prevents any unauthorised activity. It's your best defence against being turned into a zombie, and can also trap the activity of spyware and key loggers. Windows XP has a built-in firewall which has been vastly improved with Service Pack 2. Still, it doesn't do a complete job of monitoring traffic, so you should install a third-party scanner instead (don't use two software firewalls concurrently). Check out Outpost Firewall Pro and BlackICE PC Protection. If you have a high-speed, always-on connection, you should consider using a hardware firewall in conjunction with your software firewall. Many cable/DSL routers have a hardware firewall built in.
If you share your computer with others or keep sensitive information on an easily accessible desktop or notebook computer, add password protection to your data. Darn! Passwords is an excellent and affordable password manager which will let you protect your passwords, PINs, serial numbers, account numbers and more.
Your entire toolkit should cost no more than $200, and probably much less than that as it's likely you already have at least some of these tools installed. If you're starting from scratch, you can reduce the cost by buying one of the security suites, such as Norton Internet Security or PC-Cillin. Each of these combines anti-virus, firewall, and anti-spam components with additional features such as anti-spyware or parental controls.
spy etiketine sahip kayıtlar gösteriliyor. Tüm kayıtları göster
spy etiketine sahip kayıtlar gösteriliyor. Tüm kayıtları göster
14 Ekim 2011 Cuma
Viruses and worms
Viruses used to be the biggest bogey on the Internet. These days, they seem to take a back seat to spyware and spam and phishing scams. But don't let that shift lead you to regarding viruses lightly: get infected with a nasty virus and you'll know the definition of computer hell.
A virus is a small program that infects other code and then replicates. Some viruses also delete or corrupt other files, change computer settings and, in the worst cases, render your computer unusable.
Worms are also self replicating, but they do it alone without attaching to another program as viruses do. The most common form of worm is called a mass-mailing worm. Such a worm uses email to replicate itself. When activated, it may scan your entire computer system for email addresses and then email itself to those addresses. The worm may also place one of the addresses it uncovers into the "From:" field of the infected email, making it seem like it came from a completely different source (a technique known as spoofing the address).
Adware, spyware and key loggers
Adware is software which displays advertising while you use it. Many very useful free utilities and applications use the adware model to raise money. Most adware updates the ads displayed through an Internet connection; some tracks your computer usage in order to target the advertising to your interests.
Spyware is software installed without your knowledge or consent which tracks you while you use the computer and the Internet. Spyware may come piggybacking on other "legitimate" software or it may be installed via a Web site, when you unwisely click a pop-up dialog box to clear it from your screen.
Look for the padlock at the bottom of your browser's window before entering sensitive data online, and double-click the padlock to ensure the site's security certificate is in order.
As you might guess, the line between adware and spyware is sometimes measured in nanometres. Things get particularly nasty when spyware not only tracks your usage in order to target advertising, but also to gather personal information about you. In its most pernicious form, spyware may install a key logger on your computer. The key logger lurks hidden on your system and keeps track of every single thing you do, including everything you type. With a key logger active on your system, your security and privacy is completely compromised.
Phishing
Phishers use email and Web sites to try to reel in your private information, including bank account and credit card numbers, PINs and site passwords.
Of course, if you received an email saying "hand over your bank account details", you'd hit the Delete key before you blinked. But what if that email appeared to come from a bank with which you have online access? And what if the email said "There's a problem with your account, if you don't log in and fix the problem we'll suspend account access within 3 days"? And what if, on clicking the link supplied in the email, you found yourself, apparently, at your bank's Web site?
In that case, you might well think the email was on the up and up and complete the log in, in the process handing over your account number and password. Within minutes, the phisher can be working on making you poorer and sullying your credit record.
Telltale signs of a phishing scam: poor grammar and a fake Web address. (Click the image to see a full-size screenshot.)
That's how phishers work. They fake – spoof – email addresses, email content and Web sites, right down to using the same graphics, wording and other components you find on the legitimate sites. By using some sneaky coding techniques, they can mask Web addresses, fake the padlock security icon on secure pages, and make it difficult, indeed, to spot the fraud.
Spam
We all know spam is a nuisance, but does it rate as a security threat?
Well, apart from the complete invasion of privacy caused by having pornographic spam splattered all over your inbox (and your children's inboxes), the answer is…yes. Many spam emails contain Web bugs – invisible graphics containing tracking code designed for the same purposes as spyware. In addition, the sheer volume of spam and the frustration of having to deal with it may lead to incautious behaviour. That is particularly the case when spam is used as the delivery method for a virus or spyware or phishing scam. An unthinking click in the wrong email and, bam!, you've granted entry to the scammers.
Browser hijacking
Browser hijacking is the use of programming tools, in the form of scripts, to modify your browser's default settings. This may be as trivial as adding a new link to your favourites or bookmarks, or as unconscionable as changing your home page persistently via a combination of scripting, registry changes and auto-running programs.
What's the point of hijacking? To bring you back, over and over, to a site or a site's sponsor, in the hope of boosting business. The site to which you are hijacked may also house spyware, and the more often you end up on the site trying to close in-your-face pop-ups and escape, the more chance you'll accidentally install that spyware.
A virus is a small program that infects other code and then replicates. Some viruses also delete or corrupt other files, change computer settings and, in the worst cases, render your computer unusable.
Worms are also self replicating, but they do it alone without attaching to another program as viruses do. The most common form of worm is called a mass-mailing worm. Such a worm uses email to replicate itself. When activated, it may scan your entire computer system for email addresses and then email itself to those addresses. The worm may also place one of the addresses it uncovers into the "From:" field of the infected email, making it seem like it came from a completely different source (a technique known as spoofing the address).
Adware, spyware and key loggers
Adware is software which displays advertising while you use it. Many very useful free utilities and applications use the adware model to raise money. Most adware updates the ads displayed through an Internet connection; some tracks your computer usage in order to target the advertising to your interests.
Spyware is software installed without your knowledge or consent which tracks you while you use the computer and the Internet. Spyware may come piggybacking on other "legitimate" software or it may be installed via a Web site, when you unwisely click a pop-up dialog box to clear it from your screen.
Look for the padlock at the bottom of your browser's window before entering sensitive data online, and double-click the padlock to ensure the site's security certificate is in order.
As you might guess, the line between adware and spyware is sometimes measured in nanometres. Things get particularly nasty when spyware not only tracks your usage in order to target advertising, but also to gather personal information about you. In its most pernicious form, spyware may install a key logger on your computer. The key logger lurks hidden on your system and keeps track of every single thing you do, including everything you type. With a key logger active on your system, your security and privacy is completely compromised.
Phishing
Phishers use email and Web sites to try to reel in your private information, including bank account and credit card numbers, PINs and site passwords.
Of course, if you received an email saying "hand over your bank account details", you'd hit the Delete key before you blinked. But what if that email appeared to come from a bank with which you have online access? And what if the email said "There's a problem with your account, if you don't log in and fix the problem we'll suspend account access within 3 days"? And what if, on clicking the link supplied in the email, you found yourself, apparently, at your bank's Web site?
In that case, you might well think the email was on the up and up and complete the log in, in the process handing over your account number and password. Within minutes, the phisher can be working on making you poorer and sullying your credit record.
Telltale signs of a phishing scam: poor grammar and a fake Web address. (Click the image to see a full-size screenshot.)
That's how phishers work. They fake – spoof – email addresses, email content and Web sites, right down to using the same graphics, wording and other components you find on the legitimate sites. By using some sneaky coding techniques, they can mask Web addresses, fake the padlock security icon on secure pages, and make it difficult, indeed, to spot the fraud.
Spam
We all know spam is a nuisance, but does it rate as a security threat?
Well, apart from the complete invasion of privacy caused by having pornographic spam splattered all over your inbox (and your children's inboxes), the answer is…yes. Many spam emails contain Web bugs – invisible graphics containing tracking code designed for the same purposes as spyware. In addition, the sheer volume of spam and the frustration of having to deal with it may lead to incautious behaviour. That is particularly the case when spam is used as the delivery method for a virus or spyware or phishing scam. An unthinking click in the wrong email and, bam!, you've granted entry to the scammers.
Browser hijacking
Browser hijacking is the use of programming tools, in the form of scripts, to modify your browser's default settings. This may be as trivial as adding a new link to your favourites or bookmarks, or as unconscionable as changing your home page persistently via a combination of scripting, registry changes and auto-running programs.
What's the point of hijacking? To bring you back, over and over, to a site or a site's sponsor, in the hope of boosting business. The site to which you are hijacked may also house spyware, and the more often you end up on the site trying to close in-your-face pop-ups and escape, the more chance you'll accidentally install that spyware.
12 Eylül 2011 Pazartesi
Spyware Stoppers
Illustration: Doug FraserNot long ago, Web- and e-mail-borne viruses were a computer user's worst enemy. Though viruses and worms still cause more damage in compromised or lost data, a newer menace, popularly known as spyware, steals users' productivity and peace of mind. The "spyware" label can apply to legitimate but annoying programs that users consent (perhaps unwittingly) to have installed on their PCs, or it can describe programs that install themselves without permission. Both types of applications can drain your computer's resources, slow your Internet connection, spy on your surfing, and even forcibly redirect your Web browser. For the purposes of this story, we'll call the former category adware and the latter spyware. Adware clearly spells out its intent, comes with an uninstaller, and can be readily removed from a system. Spyware, in contrast, installs itself surreptitiously and can be nearly impossible to remove without assistance.
A crop of anti-spyware programs has sprung up to provide that assistance. We evaluated ten current anti-spyware utilities designed to detect and remove spyware and adware from PCs, looking at their rates of detection, scanning speed, ability to prevent unwanted applications from installing themselves, and ease of use. We were pleased to find that a couple of the programs did a very effective job of cleaning an infected system and preventing new infestations with effective real-time protection.
PC World tested seven products in the $20 to $40 range from big and small vendors: Allume Systems' (formerly Aladdin Systems') Internet Cleanup, Aluria Software's Spyware Eliminator, Computer Associates' ETrust PestPatrol Anti-Spyware, InterMute's SpySubtract Pro, McAfee's AntiSpyware, Sunbelt Software's CounterSpy, and Webroot Software's Spy Sweeper. In addition, we tested two popular free programs--Lavasoft's Ad-Aware SE Personal and Safer Networking's Spybot Search & Destroy--and a third free program that operates very differently but no less effectively, Merijn.org's HijackThis. (You can get all three free products here.) We did not include HijackThis in our charts because, unlike the others, it does not scan for infections. We also tested one product in beta, Microsoft's new Windows AntiSpyware, which was until late last year Giant Software's AntiSpyware.
A crop of anti-spyware programs has sprung up to provide that assistance. We evaluated ten current anti-spyware utilities designed to detect and remove spyware and adware from PCs, looking at their rates of detection, scanning speed, ability to prevent unwanted applications from installing themselves, and ease of use. We were pleased to find that a couple of the programs did a very effective job of cleaning an infected system and preventing new infestations with effective real-time protection.
PC World tested seven products in the $20 to $40 range from big and small vendors: Allume Systems' (formerly Aladdin Systems') Internet Cleanup, Aluria Software's Spyware Eliminator, Computer Associates' ETrust PestPatrol Anti-Spyware, InterMute's SpySubtract Pro, McAfee's AntiSpyware, Sunbelt Software's CounterSpy, and Webroot Software's Spy Sweeper. In addition, we tested two popular free programs--Lavasoft's Ad-Aware SE Personal and Safer Networking's Spybot Search & Destroy--and a third free program that operates very differently but no less effectively, Merijn.org's HijackThis. (You can get all three free products here.) We did not include HijackThis in our charts because, unlike the others, it does not scan for infections. We also tested one product in beta, Microsoft's new Windows AntiSpyware, which was until late last year Giant Software's AntiSpyware.
2 Eylül 2011 Cuma
How Phishing Works
Suppose you check your e-mail one day and find a message from your bank. You've gotten e-mail from them before, but this one seems suspicious, especially since it threatens to close your account if you don't reply immediately. What do you do?
This message and others like it are examples of phishing, a method of online identity theft. In addition to stealing personal and financial data, phishers can infect computers with viruses and convince people to participate unwittingly in money laundering.
Most people associate phishing with e-mail messages that spoof, or mimic, banks, credit card companies or other business like Amazon and eBay. These messages look authentic and attempt to get victims to reveal their personal information. But e-mail messages are only one small piece of a phishing scam.
Phishing Origins
The first documented use of the word "phishing" took place in 1996. Most people believe it originated as an alternative spelling of "fishing," as in "to fish for information" [source: Next Generation Security Software].
From beginning to end, the process involves:
Planning. Phishers decide which business to target and determine how to get e-mail addresses for the customers of that business. They often use the same mass-mailing and address collection techniques as spammers.
Setup. Once they know which business to spoof and who their victims are, phishers create methods for delivering the message and collecting the data. Most often, this involves e-mail addresses and a Web page.
Attack. This is the step people are most familiar with -- the phisher sends a phony message that appears to be from a reputable source.
Collection. Phishers record the information victims enter into Web pages or popup windows.
Identity Theft and Fraud. The phishers use the information they've gathered to make illegal purchases or otherwise commit fraud. As many as a fourth of the victims never fully recover [Source: Information Week].
Computer Security
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ScienceChannel.com: Hacker Quiz
If the phisher wants to coordinate another attack, he evaluates the successes and failures of the completed scam and begins the cycle again.
Phishing scams take advantages of software and security weaknesses on both the client and server sides. But even the most high-tech phishing scams work like old-fashioned con jobs, in which a hustler convinces his mark that he is reliable and trustworthy. Next, we'll look at the steps phishers take to convince victims that their messages are legitimate.
This message and others like it are examples of phishing, a method of online identity theft. In addition to stealing personal and financial data, phishers can infect computers with viruses and convince people to participate unwittingly in money laundering.
Most people associate phishing with e-mail messages that spoof, or mimic, banks, credit card companies or other business like Amazon and eBay. These messages look authentic and attempt to get victims to reveal their personal information. But e-mail messages are only one small piece of a phishing scam.
Phishing Origins
The first documented use of the word "phishing" took place in 1996. Most people believe it originated as an alternative spelling of "fishing," as in "to fish for information" [source: Next Generation Security Software].
From beginning to end, the process involves:
Planning. Phishers decide which business to target and determine how to get e-mail addresses for the customers of that business. They often use the same mass-mailing and address collection techniques as spammers.
Setup. Once they know which business to spoof and who their victims are, phishers create methods for delivering the message and collecting the data. Most often, this involves e-mail addresses and a Web page.
Attack. This is the step people are most familiar with -- the phisher sends a phony message that appears to be from a reputable source.
Collection. Phishers record the information victims enter into Web pages or popup windows.
Identity Theft and Fraud. The phishers use the information they've gathered to make illegal purchases or otherwise commit fraud. As many as a fourth of the victims never fully recover [Source: Information Week].
Computer Security
Computer Security Quiz
10 Worst Computer Viruses
ScienceChannel.com: Hacker Quiz
If the phisher wants to coordinate another attack, he evaluates the successes and failures of the completed scam and begins the cycle again.
Phishing scams take advantages of software and security weaknesses on both the client and server sides. But even the most high-tech phishing scams work like old-fashioned con jobs, in which a hustler convinces his mark that he is reliable and trustworthy. Next, we'll look at the steps phishers take to convince victims that their messages are legitimate.
How Spyware Works
Has your computer ever become so slow that you can fix yourself a snack in the time it takes your word processor to open? Perhaps spyware is to blame.
Spyware is a category of computer programs that attach themselves to your operating system in nefarious ways. They can suck the life out of your computer's processing power. They're designed to track your Internet habits, nag you with unwanted sales offers or generate traffic for their host Web site. According to some estimates, more than 80 percent of all personal computers are infected with some kind of spyware [source: FaceTime Communications]. But before you chuck your computer out the window and move to a desert island, you might want to read on. In this article we'll explain how spyware gets installed on your computer, what it does there and how you can get rid of it.
Some people mistake spyware for a computer virus. A computer virus is a piece of code designed to replicate itself as many times as possible, spreading from one host computer to any other computers connected to it. It usually has a payload that may damage your personal files or even your operating system.
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Spyware, on the other hand, generally isn't designed to damage your computer. Spyware is defined broadly as any program that gets into your computer without your permission and hides in the background while it makes unwanted changes to your user experience. The damage it does is more a by-product of its main mission, which is to serve you targeted advertisements or make your browser display certain sites or search results.
At present, most spyware targets only the Windows operating system. Some of the more notorious spyware threats include Trymedia, Nuvens, Estalive, Hotbar and New.Net.Domain.Plugin
Spyware is a category of computer programs that attach themselves to your operating system in nefarious ways. They can suck the life out of your computer's processing power. They're designed to track your Internet habits, nag you with unwanted sales offers or generate traffic for their host Web site. According to some estimates, more than 80 percent of all personal computers are infected with some kind of spyware [source: FaceTime Communications]. But before you chuck your computer out the window and move to a desert island, you might want to read on. In this article we'll explain how spyware gets installed on your computer, what it does there and how you can get rid of it.
Some people mistake spyware for a computer virus. A computer virus is a piece of code designed to replicate itself as many times as possible, spreading from one host computer to any other computers connected to it. It usually has a payload that may damage your personal files or even your operating system.
Up Next
How Trolls Work
How Trojan Horses Work
Curiosity Project: 10 Surprising Ways Software Keeps Us Moving
Spyware, on the other hand, generally isn't designed to damage your computer. Spyware is defined broadly as any program that gets into your computer without your permission and hides in the background while it makes unwanted changes to your user experience. The damage it does is more a by-product of its main mission, which is to serve you targeted advertisements or make your browser display certain sites or search results.
At present, most spyware targets only the Windows operating system. Some of the more notorious spyware threats include Trymedia, Nuvens, Estalive, Hotbar and New.Net.Domain.Plugin
How E-mail Scams Work
Almost everyone who has e-mail has been greeted with a message that offers an amazing financial opportunity. From pleas from African government officials to notices that you've won a lottery (that you don't remember entering), the e-mail messages appear too good to be true. And they are.
E-mail scams and Internet fraud are two of the most common complaints of computer users today. Often well disguised and including just enough true information to be enticing, e-mail fraud can be potentially dangerous to the recipient's finances and credit rating. These thieves may seek to steal your money directly, using bank account or credit card numbers you provide. Or they may seek to steal your identity, running up charges in your name. Money Magazine reports that more than 93 million personal data records have been lost or stolen since February 2005.
No one is safe. The FBI issued a warning in July 2007 about an increasing number of e-mail scams where the perpetrators impersonated the FBI to intimidate victims into giving up personal data. A similar e-mail scam was sent to taxpayers seemingly from the Internal Revenue Service, telling the taxpayers that they had an unclaimed refund.
E-mail scammers also act quickly. In November 2007, CNN reported that scammers were e-mailing people and asking them to donate to victims of the California wildfires.Such scams also appeared after 2005's Hurricane Katrina.
A recent report from Symantec, a supplier of Internet security software, said Web pirates are moving away from viruses and other damaging software and instead are focusing on financial gain through fraud. Government and private citizens in the United States provide more than half of the Internet activity that might lead to identity theft, the report stated.
E-mail scams and Internet fraud are widespread and costly. The FBI estimates computer-related crimes, including virus attacks, identity theft and other fraud, has cost $400 billion in the United States. The Internet Crime Complaint Center, a joint venture between the FBI and the National White Collar Crime Center, logged its 1 millionth complaint in the summer of 2007.
In this article we'll discuss e-mail scams and Internet fraud -- how to recognize it and how to protect yourself.
E-mail scams and Internet fraud are two of the most common complaints of computer users today. Often well disguised and including just enough true information to be enticing, e-mail fraud can be potentially dangerous to the recipient's finances and credit rating. These thieves may seek to steal your money directly, using bank account or credit card numbers you provide. Or they may seek to steal your identity, running up charges in your name. Money Magazine reports that more than 93 million personal data records have been lost or stolen since February 2005.
No one is safe. The FBI issued a warning in July 2007 about an increasing number of e-mail scams where the perpetrators impersonated the FBI to intimidate victims into giving up personal data. A similar e-mail scam was sent to taxpayers seemingly from the Internal Revenue Service, telling the taxpayers that they had an unclaimed refund.
E-mail scammers also act quickly. In November 2007, CNN reported that scammers were e-mailing people and asking them to donate to victims of the California wildfires.Such scams also appeared after 2005's Hurricane Katrina.
A recent report from Symantec, a supplier of Internet security software, said Web pirates are moving away from viruses and other damaging software and instead are focusing on financial gain through fraud. Government and private citizens in the United States provide more than half of the Internet activity that might lead to identity theft, the report stated.
E-mail scams and Internet fraud are widespread and costly. The FBI estimates computer-related crimes, including virus attacks, identity theft and other fraud, has cost $400 billion in the United States. The Internet Crime Complaint Center, a joint venture between the FBI and the National White Collar Crime Center, logged its 1 millionth complaint in the summer of 2007.
In this article we'll discuss e-mail scams and Internet fraud -- how to recognize it and how to protect yourself.
22 Ağustos 2011 Pazartesi
Use security software that updates automatically.
Keep your security software active and current: at a minimum, your computer should have anti-virus and anti-spyware software, and a firewall. You can buy stand-alone programs for each element or a security suite that includes these programs from a variety of sources, including commercial vendors or from your Internet Service Provider. Security software that comes pre-installed on a computer generally works for a short time unless you pay a subscription fee to keep it in effect. In any case, security software protects against the newest threats only if it is up-to-date. That's why it is critical to set your security software to update automatically.
Some scam artists distribute malware disguised as anti-spyware software. Resist buying software in response to unexpected pop-up messages or emails, especially ads that claim to have scanned your computer and detected malware. That's a tactic scammers have used to spread malware. OnGuardOnline.gov can connect you to a list of security tools from legitimate security vendors selected by GetNetWise, a project of the Internet Education Foundation.
Once you confirm that your security software is up-to-date, run it to scan your computer for viruses and spyware. If the program identifies a file as a problem, delete it.
Anti-Virus Software
Anti-virus software protects your computer from viruses that can destroy your data, slow your computer's performance, cause a crash, or even allow spammers to send email through your account. It works by scanning your computer and your incoming email for viruses, and then deleting them.
Anti-Spyware Software
Installed on your computer without your consent, spyware software monitors or controls your computer use. It may be used to send you pop-up ads, redirect your computer to websites, monitor your internet surfing, or record your keystrokes, which, in turn, could lead to the theft of your personal information.
A computer may be infected with spyware if it:
Slows down, malfunctions, or displays repeated error messages
Won't shut down or restart
Serves up a lot of pop-up ads, or displays them when you're not surfing the web
Displays web pages or programs you didn't intend to use, or sends emails you didn't write.
Firewalls
A firewall helps keep hackers from using your computer to send out your personal information without your permission. While anti-virus software scans incoming email and files, a firewall is like a guard, watching for outside attempts to access your system and blocking communications to and from sources you don't permit.
Some scam artists distribute malware disguised as anti-spyware software. Resist buying software in response to unexpected pop-up messages or emails, especially ads that claim to have scanned your computer and detected malware. That's a tactic scammers have used to spread malware. OnGuardOnline.gov can connect you to a list of security tools from legitimate security vendors selected by GetNetWise, a project of the Internet Education Foundation.
Once you confirm that your security software is up-to-date, run it to scan your computer for viruses and spyware. If the program identifies a file as a problem, delete it.
Anti-Virus Software
Anti-virus software protects your computer from viruses that can destroy your data, slow your computer's performance, cause a crash, or even allow spammers to send email through your account. It works by scanning your computer and your incoming email for viruses, and then deleting them.
Anti-Spyware Software
Installed on your computer without your consent, spyware software monitors or controls your computer use. It may be used to send you pop-up ads, redirect your computer to websites, monitor your internet surfing, or record your keystrokes, which, in turn, could lead to the theft of your personal information.
A computer may be infected with spyware if it:
Slows down, malfunctions, or displays repeated error messages
Won't shut down or restart
Serves up a lot of pop-up ads, or displays them when you're not surfing the web
Displays web pages or programs you didn't intend to use, or sends emails you didn't write.
Firewalls
A firewall helps keep hackers from using your computer to send out your personal information without your permission. While anti-virus software scans incoming email and files, a firewall is like a guard, watching for outside attempts to access your system and blocking communications to and from sources you don't permit.
Practices for Computer Security
Access to information and entertainment, credit and financial services, products from every corner of the world — even to your work — is greater than ever. Thanks to the internet, you can play a friendly game with an opponent across the ocean; review and rate videos, songs, or clothes; get expert advice in an instant; or collaborate with far-flung co-workers in a "virtual" office.
But the internet — and the anonymity it affords — also can give online scammers, hackers, and identity thieves access to your computer, personal information, finances, and more.
With awareness as your safety net, you can minimize the chance of an internet mishap. Being on guard online helps you protect your information, your computer, and your money. To be safer and more secure online, make these seven practices part of your online routine.
But the internet — and the anonymity it affords — also can give online scammers, hackers, and identity thieves access to your computer, personal information, finances, and more.
With awareness as your safety net, you can minimize the chance of an internet mishap. Being on guard online helps you protect your information, your computer, and your money. To be safer and more secure online, make these seven practices part of your online routine.
16 Ağustos 2011 Salı
What is a keylogger?
According to experts, keystroke loggers pose more risk to PC users than any other tool used for committing cybercrime. Also known as keyloggers, they are small programs or hardware devices that monitor each keystroke you type on a specific computer's keyboard, including typos, backspacing and retyping.
Recording your every move on the Web
Although keyloggers are promoted for benign purposes like allowing parents to monitor their children's whereabouts on the Internet, they can be used to spy on anyone. They are used by cybercriminals to covertly watch and record everything you type on your PC in order to harvest your log-in names, passwords, and other sensitive information, and send it on to the hackers. This may include any passwords you have asked your computer to remember for you to speed up logging in, as these are held as cookies on your machine.
Unfortunately for consumers, keyloggers are becoming very sophisticated. Once on a PC, they can track websites visited by the user and only log the keystrokes entered on the websites that are of particular interest to the cybercriminal; for example online banking websites.
Therefore, keyloggers are an increasingly popular tool among identity thieves and most financial cybercrime is committed using them, as these programs are the most comprehensive and reliable tool for tracking electronic information. One security company detected just 275 keyloggers in 2001, while the number had reached 6,200 in 2005. Another security company recorded more than a 500 percent increase between January 2003 and July 2006.
Identity theft in all its various guises is one of the fastest growing crimes, with keylogging Trojan software often forming the weapon of choice for would-be fraudsters. According to figures from American consumer watchdog the Federal Trade Commission, almost ten million Americans discovered they were the victims of identity theft during 2003, with total losses approaching $50 billion. The research shows that the number of victims has risen by 50 percent since 2003 and the financial loss per consumer has more than doubled from $1,408 in 2005 to $3,257 in 2006.
In 2007, keylogging software found its way onto hundreds of PCs belonging to account holders at the large Swedish bank Nordea. In the biggest heist of customer accounts on record more than $1 million was stolen. Also in 2007, the users of an American retirement savings and investment plan for federal employees were targeted by keyloggers, with cybercriminals taking off with about $35,000 from two dozen user accounts.
In 2005, a businessman from Florida filed a lawsuit against the Bank of America after unknown hackers stole $90,000 from his account and transferred the money to Latvia. An investigation showed that his computer was infected with a malicious program that recorded every keystroke and this was how the hackers got hold of his user name and password. The court did not rule in favor of the plaintiff, saying that he had neglected to take basic precautions when managing his bank account on the Internet: a signature for the malicious code that was found on his system had been added to nearly all antivirus product databases back in 2003.
Your PC can become infected with keyloggers in various ways. They can be inadvertently downloaded from an infected Web site, email attachment, or by clicking on links. Often cyberthieves are using Trojan-horse software to load keylogging software onto unsuspecting victims' computers.
Recommended methods to protect against keyloggers include keeping all your programs up-to-date – antivirus and firewall software as well as Windows, Office and other applications – recognising phishing emails, and avoiding the temptation of clicking links in email that point to potentially dodgy sites hosting malware.
Recording your every move on the Web
Although keyloggers are promoted for benign purposes like allowing parents to monitor their children's whereabouts on the Internet, they can be used to spy on anyone. They are used by cybercriminals to covertly watch and record everything you type on your PC in order to harvest your log-in names, passwords, and other sensitive information, and send it on to the hackers. This may include any passwords you have asked your computer to remember for you to speed up logging in, as these are held as cookies on your machine.
Unfortunately for consumers, keyloggers are becoming very sophisticated. Once on a PC, they can track websites visited by the user and only log the keystrokes entered on the websites that are of particular interest to the cybercriminal; for example online banking websites.
Therefore, keyloggers are an increasingly popular tool among identity thieves and most financial cybercrime is committed using them, as these programs are the most comprehensive and reliable tool for tracking electronic information. One security company detected just 275 keyloggers in 2001, while the number had reached 6,200 in 2005. Another security company recorded more than a 500 percent increase between January 2003 and July 2006.
Identity theft in all its various guises is one of the fastest growing crimes, with keylogging Trojan software often forming the weapon of choice for would-be fraudsters. According to figures from American consumer watchdog the Federal Trade Commission, almost ten million Americans discovered they were the victims of identity theft during 2003, with total losses approaching $50 billion. The research shows that the number of victims has risen by 50 percent since 2003 and the financial loss per consumer has more than doubled from $1,408 in 2005 to $3,257 in 2006.
In 2007, keylogging software found its way onto hundreds of PCs belonging to account holders at the large Swedish bank Nordea. In the biggest heist of customer accounts on record more than $1 million was stolen. Also in 2007, the users of an American retirement savings and investment plan for federal employees were targeted by keyloggers, with cybercriminals taking off with about $35,000 from two dozen user accounts.
In 2005, a businessman from Florida filed a lawsuit against the Bank of America after unknown hackers stole $90,000 from his account and transferred the money to Latvia. An investigation showed that his computer was infected with a malicious program that recorded every keystroke and this was how the hackers got hold of his user name and password. The court did not rule in favor of the plaintiff, saying that he had neglected to take basic precautions when managing his bank account on the Internet: a signature for the malicious code that was found on his system had been added to nearly all antivirus product databases back in 2003.
Your PC can become infected with keyloggers in various ways. They can be inadvertently downloaded from an infected Web site, email attachment, or by clicking on links. Often cyberthieves are using Trojan-horse software to load keylogging software onto unsuspecting victims' computers.
Recommended methods to protect against keyloggers include keeping all your programs up-to-date – antivirus and firewall software as well as Windows, Office and other applications – recognising phishing emails, and avoiding the temptation of clicking links in email that point to potentially dodgy sites hosting malware.
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