Dave Thomas, former chief of computer intrusion investigations at FBI headquarters, and current assistant special agent in charge of the St. Louis division of the FBI, told SecurityFocus that several folks at the FBI use Macs. “[He] told us that many of the computer security folks back at FBI HQ use Macs running OS X, since those machines can do just about anything: run software for Mac, Unix, or Windows, using either a GUI or the command line. And they’re secure out of the box… Dave also had a great quotation for us: ‘If you’re a bad guy and you want to frustrate law enforcement, use a Mac.’ Basically, police and government agencies know what to do with seized Windows machines. They can recover whatever information they want, with tools that they’ve used countless times. The same holds true, but to a lesser degree, for Unix-based machines. But Macs evidently stymie most law enforcement personnel.”