Following revelations of hackers accessing files at companies including Apple and Facebook, Microsoft revealed today it also found evidence of intrusions. In a blog post on the Microsoft Security Response Center, general manager Matt Thomlinson indicated "a small number of computers, including some in our Mac business unit" were affected by malware of the type described in the other attacks. As he mentions, such cyberattacks are no surprise to a company with Microsoft's profile, however one wonders if the folks in Redmond aren't having a chuckle