Previously unknown Mac OS X spyware, signed with a valid Apple Developer ID, has turned up on the laptop of an activist from Angola at a human rights conference in Norway.

Led by Windows 7, Microsoft's operating systems still control the enterprise, but the software giant's days of dominance are waning. As a recent Forrester report highlights, mobile devices and BYOD have made the state of enterprise operating systems far more complex.

The day it acknowledged company-owned Macs had been hacked using a "drive-by" Java exploit, Apple on Tuesday patched the Oracle software for older systems and released a malware detection tool.

When Microsoft wanted to show off its midmarket affinity, the software giant would do a promotional video with Lifetime Products, a manufacturer of polyethylene folding tables, chairs and sports equipment. Until about two years ago, Lifetime was Microsoft's midmarket darling.

Hackers are testing new Mac malware that they've ported from a nine-year-old Trojan horse originally written for Linux, according to security experts.

Windows is on the verge of dropping below 90% market share, with smartphones and tablets posing an increasingly serious threat to Microsoft's dominance of the operating system market.

Perhaps you've heard that the Apple Mac OS X operating system is simply more secure by design and not prone to the security flaws and vulnerabilities that plague the dominant Microsoft Windows operating system? Well, don't believe the hype. Apple unleashed an update for Mac OS X this week which fixes a massive 134 vulnerabilities.

Not surprisingly, the misperception that Linux is harder to use than other operating systems is also one that competing vendors routinely use to scare potential new users away from Linux.