Written in plain English and VERY worthwhile reading. You won't be spammed (or scammed) either.

CRYPTO-GRAM is written by Bruce Schneier. Schneier is founder and CTO
of Counterpane Internet Security Inc., the author of "Secrets and Lies"
and "Applied Cryptography," and an inventor of the Blowfish, Twofish,
and Yarrow algorithms. He is a member of the Advisory ***rd of the
Electronic Privacy Information Center (EPIC). He is a frequent writer
and lecturer on computer security and cryptography.

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