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Security Threats: To Defend and Protect

In 2012, an attacker obtained around 8 million hashed passwords from LinkedIn and eHarmony. Before long, LinkedIn was confronted with a $5 million class-action lawsuit over its security practices. It seems as if every month a major security breach at some large company hits the news, alarming or harming users and driving them to seek minimal exposure and avoid openness. The Internet presents fields of opportunity for virtuous entrepreneurs and customers, but malicious people prowl the Internet too.

Criminal and commercial hackers pursue money, personal data, intelligence, and power; vandal hackers punish ...

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