Cap'n Jack
Final Approach
Macs are immune to viruses
This myth is one that is pushed relentlessly, both overtly and subtly, by Mac fans, and, of course, by Apple. Everyone knows that Windows machines are constantly being bombarded by malware and that keeping them secure is a never-ending task.
But you rarely hear about such things from Mac users, and the common theory is that it's because Apple's computers are simply safe from being attacked.
Not so fast. It does seem, as has been well-reported, that that are far fewer exploits hitting Macs than their Windows-based cousins. But it's hardly because Macs are immune from attack. Indeed, according to security researcher Nitesh Dhanjani, it has much more to do with market share--there simply aren't anywhere near as many Macs out there as there are Windows machines.
"If we were to flip the market share, we would see a lot more exploitation in the wild," Dhanjani told my CNET colleague Elinor Mills earlier this year. "More specifically, browser security is one of the more important items to consider today from a risk perspective. I know Internet Explorer has had a considerable share of vulnerabilities, but the Safari Web browser also has a lousy reputation in the security community--it almost seems a child's play to locate an exploitable condition in Safari. Apple really needs to get its act together with Safari since OS X is enjoying a healthy market share climb at the moment."
Other security experts seem to agree that Macs' relative lack of virus problems has much more to do with the computer's market share than any kind of actual fortitude against attack. As Halvar Flake, head of research and CEO of Zynamics, told Mills, "Vista/Win7 has more extensive countermeasures against attacks and a codebase with presumably fewer security issues. But it's the operating system of the majority of users, hence making it profitable to attack. Attackers will therefore spend lots of time bypassing the countermeasures. Mac OS has fewer countermeasures and lots of easily exploitable bugs, but the market share is low, making it a less likely target."
Then again, the market share dynamic does, in fact, mean that Macs are less likely to get hit, so in that sense, they are safer. "For an everyday consumer that just wants to use a computer and not worry about getting owned with every click of the mouse, I'd go for a Mac," Joe Grand, president of Grand Idea Studio, told Mills.
Ref: http://news.cnet.com/8301-13772_3-20026047-52.html?tag=TOCcarouselMain.0 Retrieved 2 Jan 2011
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