*A Hacker's Mind* is security expert Bruce Schneier's latest book, out today. For long-time Schneier readers, the subject matter will be familiar, but this iteration of Schneier's core security literacy curriculum has an important new gloss: *power*.
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Schneier started out as a cryptographer, author of 1994's *Applied Cryptography*, one of the standard texts on the subject. He created and co-created several important ciphers, and started two successful security startups that were sold onto larger firms. 3/
When George Hayward was a Facebook data-scientist, his bosses ordered him to run a #NegativeTest, updating Messenger to deliberately drain users' batteries to determine how power-hungry various options were. Hayward refused. FB fired him. He sued:
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Hayward balked because he knew that among the 1.3 billion people who use Messenger, some would be placed in harm's way if Facebook deliberately drained their batteries. 3/