Thursday Nov 06, 2008

Why you shouldnt pay for antivirus programs anymore

Anti-virus protection software has been a fact of computer users' lives for almost as long as anyone care to remember. But have recent changes in system software and user behavior made anti-virus software needless? Let's take a good look at the facts.

Windows Vista

It's no secret that most malware targets Windows-based machines, because it's spread widely. Microsoft recognized this and addressed the problem by integrating anti-malware technology (called UAC - User Account Control) directly into its Windows Vista Kernel.

UAC  is automatically finds potentially dangerous situations and temporarily suspends suspicious programs effectively trapping any malware that may be trying to install itself on the machine.

Windows Defender protects Vista PCs by working to keep the system free of many types of malware, including spyware and adware. Last, but not least is Windows Firewall. WF, meanwhile, blocks suspicious types of incoming/outgoing traffic,. It has very poor configuration capabilities, but it greatly enhance system security. The automatic updating features provide yet another layer of protection by ensuring that the system is kept up-to-date with the latest security patches; this feature does not require the user to take any action.

Therefore: The combination of UAC, Windows Defender, Windows Firewall and automating updating does a very good job of keeping Vista-based machines secure and up-to-date. Unless a Vista user is inclined to perform foolish actions (such as intentionally subverting UAC and other security-oriented services), external anti-virus protection is usually unnecessary.

Windows XP

Although Vista has been widely available for more than a year, many users continue continue to rely on computers with Windows XP.

While Windows XP remains a stable and definitely usable platform, its vulnerability to malware is well-known. XP doesn't have UAC, Windows Defender or other security improvements. Although Microsoft and various software vendors have worked hard to patch the numerous security holes found in XP, new and serious vulnerabilities continue to arise quite regularly.

Therefore: Since XP systems sit squarely in virus creators' crosshairs and doesn't provide Vista's powerful system-protection capabilities, it would be foolish and reckless move to throw aside anti-virus programs for most users. Additionally, users can add much protection to XP by adding a third-party firewall. Windows Defender for XP is also available to download for free.

Mac OS X

It's no secret that Mac users like to feel superior to Windows ones, particularly when it comes to security. A 2007 study conducted by McAfee Inc.'s Avert Labs found that out of more than 236,000 known malware programs, only 7 of them targeted OS X. Unfortunately, this situation has changed for the worse since then. Despite the rise of the Mac malware, the situation is still dramatically better for OS X users than it is for MS users. This makes it much less likely, although not  impossible, for a Mac system to be compromised by a virus.

Therefore: By following smart practices, such as keeping Macintosh OS up-to-date and not clicking unknown email attachments/download unknown files from the web, it is generally safe to use a OS X computer without anti-virus software. But those who need to engage in unsafe practices or who have extra security concerns can install Macintosh versions of anti-virus, anti-malware and firewall programs.

Linux/Unix

Common sense dictates that virus creators know better than to tangle with Linux machines, given the fact that a significant percentage of Linux users know as much about computers and virus behavior as the bad guys. But *nix's user base is not that bug, and there are Linux viruses and malware programs - just very few of them.

Therefore: Given the fact that Linux viruses are relatively rare and that most Linux users are highly knowledgeable, the need for add-on anti-virus protection is minimal. Still, if one has an office filled with inexperienced computer users working on Linux machines, installing anti-virus software isn't necessarily a bad idea.

Conclusion

Whether to abandon add-on anti-virus software hinges on several factors, including the particular type of OS and how the it's being used (box that isn't used for email or web surfing, for instance, isn't likely to get hit with a virus). Other factors to consider include the level of user knowledge and experience (knowing, e.g., not to recklessly open unknown email attachments) and the computer owner's willingness to accept an increased level of risk.

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