If you still think your Mac is immune to malware and malicious infections then it’s time to stop kidding yourself. The recent Flashback trojan has proven that these a real issue for Apple’s desktop operating system, and as long as Mac OS X continues to grow, so will its infections.

But Apple is now working to prevent them. It issued a fix for the Flashback infection after it became apparent just how huge it was, and the Cupertino company is now teaming up with security specialists Kaspersky to identify other vulnerabilities.

The Flashback malware which was found to be infecting over 650,000 Macs at its peak was earning its creators up to $10,000 a day, according to security specialists Symantec. The OSX.Flashback.K trojan, which is believed to be the largest Mac infection to date, is designed to steal page views and advertising revenue from Google.

News, information, and commentary of the Flashback malware threat has ricocheted around the web over the past few weeks. The news of dangerous Mac malware has spread from the Apple and tech media into the mainstream. While not downplaying the seriousness of the threat, a Microsoft announcement yesterday does offer some perspective.

Microsoft made it clear that the Conficker worm is still infecting millions of PCs worldwide – three years after fears about Conficker’s potential damage and the estimated level of infections (estimates ran as high 12 million PCs at the time) created a media frenzy.

Think your Mac’s safe now that you’ve removed that Flashback infection? Think again. New research conducted by security specialists Sophos has revealed a “disturbingly high level” of Macs are currently carrying malware, though much of it is designed to attack Windows machines.

Of the 100,000 Macs that Sophos analyzed, one in five was found to be carrying Windows malware, while one in 36 was carrying malware designed for and dangerous to Mac OS X.