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How Personal & Internet Security Work by Preston Gralla

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Chapter 15. How Virtual Private Networks and Encryption Keep You Safe

How Virtual Private Networks and Encryption Keep You Safe

The Internet is notoriously insecure. Whatever you send out across it can be potentially read—corporate information, your credit card numbers, and more.

There is a related problem as well. How can a site know whether the person sending the information across the Internet, such as credit card information, is really who she says she is? There are ways for people to forge identities and steal credit card numbers, and websites, financial institutions, and other businesses require ways to verify people’s identities.

Several ways have been developed to solve these problems. At the heart ...

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