Don't Let Your Email Give You Away

General Petraeus wishes he'd followed this simple advice

The extramarital affair scandal engulfing former CIA director David Petraeus have brought massive public attention to the convoluted U.S. laws governing e-mail privacy. We've got some quick tips for keeping your electronic communiques private.

Before getting into the more technical side of things, there are some simple behavioral changes you can make.

Always log out of your e-mail when you're done using it. This goes for any online service, including social networking sites. Logging out prevents a cached password from keeping you signed in even after the browser has been restarted.