Hmm, I didn't know that. It seems you may be right: http://www.frameloss.org/wp-content/uploads/2011/09/Lion-Memory-Acquisition.pdf http://www.frameloss.org/wp

Hmm, I didn't know that. It seems you may be right: http://www.frameloss.org/wp-content/uploads/2011/09/Lion-Memory-Acquisition.pdf http://www.frameloss.org/wp-content/uploads/2011/09/Lion-Mem... Though apparently there was a company offering a commercial solution for getting FileVault passwords using this method so... http://privacycast.com/filevault-vulnerability-how-to-protect-yourself-whole-disk-encryption-macos-lion/ http://privacycast.com/filevault-vulnerability-how-to-protec... There's also a really interesting pdf from Apple containing more details on FileVault 2: http://training.apple.com/pdf/WP_FileVault2.pdf http://training.apple.com/pdf/WP_FileVault2.pdf which suggests turning on firmware passwords to prevent DMA.