Z
ZeroDay
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With PRISM news losing momentum and shifting to Snowden's whereabouts almost entirely, it is likely that the majority of the world population will have forgotten about it very soon. It is unlikely that anything will be done about it to prevent that data is grabbed by agencies around the world, so that users are left with protecting their data individually.
Secure Gmail is one of those solutions. The application is currently only available as an extension for Google Chrome which somewhat limits its reach, but it is a start and it has a lot going for it. First, it is Open Source which means that you can dive right into the source code to check it out before you start using the extension.
Source.