I am new to the Mac world and I have a MacBook Pro running OS X 10.8.5. I was shocked this weekend that my teenager son was able to hack into my MacBook Pro using the .applesetupdone trick. So, my question is: Will enabling FileVault stop others from booting the system into single user mode (CMD+S) and recovery mode (CMD+R)? In any case, will anyone be able to hack into the system in anyway if FileVault is enabled? Thanks. Please help.