The first ever publicly known OS X firmware bootkit emerged out of the 31st Chaos Computer Club conference in Hamburg, Germany last month. Security researcher developed the attack and named it Thunderstrike.

In fact, the vulnerability underlies the operating system altogether. Hudson contacted Apple and they reportedly resolved the issue in all affected devices except the MacBook. There is no room for doubt here: Thunderstrike, like all boot- and rootkits, is a nasty threat that can wrest control over everything you do on your computer. You can think of it as the Ebola of computer threats.