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Summary

This chapter addresses the issue of unencrypted email messages being transmitted in the clear over the Internet. Unfortunately, encrypting email messages isn't a common technique, as it is with Web applications. Email encryption is more complicated and depends on more user interaction than a Web-based application requires. However, it's the only way to prevent sensitive information from being transmitted in the clear and possibly being intercepted.

Email messages can be intercepted or cached in several ways and their contents exposed to someone other than the intended recipient. The authentication credentials you use to log in to email can be exposed in the same way, which can make you vulnerable to attacks even when you're not logged in.


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