【Coursera】Security Introduction -Eighth Week(1)

Security Introduction

People With Bad Intent

Paranoia(偏执狂)

Who is out to get us? -The government

Alan Turing and Bletchley Park

Security is always a Tradeoff(交易，折中)

Terminology(术语): 两个问题 欺骗与泄密

Security - Encryption(加密) and Confidentially

Confidentially 机密性

Two kinds of systems