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.

A Mac infected by a virus used to be something of a rarity, and it was the best argument you could bring to a Mac versus PC debate. But with Mac adoption surging in recent years, it was inevitable that Apple’s operating system would become a target for hackers.

Variations of one Flashback trojan, which first surfaced back in 2007, are now affecting more than 600,000 Macs around the world. Here’s how to find out whether your machine’s affected and kill the malware.