Security from whom, against what threat? Years ago, I tried to help a friend transition from Windows on a white MacBook to Boot Camp. She didn't tell me that t

Security from whom, against what threat? Years ago, I tried to help a friend transition from Windows on a white MacBook to Boot Camp. She didn't tell me that the NTFS partition was using security features. I ignorantly made a DMG of the disk, and tried to restore that as a partition. It wasn't bootable, so I tried again as a virtual machine. Mac OS can mount the DMG, but only read the non-encrypted files. I still think her data is lost, although I keep the DMG on my external drive just in case tools come along one day when I can rescue her data. I was embarrassed at my mistake (don't just image a drive and expect it to work), and now I just tell people to make their own backup. Local security isn't about protecting yourself from PRISM. On Windows it's about viruses, but those are less common on Macs. I'd rather have a machine using HFS+ that I can mount R/W on Linux, with root login, with an easy way to set up a local web server. Worrying about hackers when I'm behind NAT just doesn't seem proportional - if they're on the same network, they can probably just walk over and get hardware access. Security is like DRM; it makes life for everyone more difficult, and those who are truly determined will get in anyway.