The Art of Invisibility: The World's Most Famous Hacker Teaches You How to Be Safe in the Age of Big Brother and Big Data

by Kevin D. Mitnick

If I have to leave my laptop behind, then I never leave it in hibernate mode. Rather, I power it down. If I didn’t, an attacker could possibly dump the memory and obtain my PGP Whole Disk encryption keys.6 So I turn it all the way off.