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EFF's software development and technology research projects aim to improve the rights of free expression, security, and privacy on the internet.

  • HTTPS Everywhere is a Firefox extension that makes Firefox use HTTPS to the greatest extent possible
  • The SSL Observatory is a view of the state of HTTPS deployment in the IPv4 address space
  • Switzerland detects violations of network neutrality
  • Panopticlick shows how easy it is to uniquely identify browsers
  • Privacy Badger blocks spying ads and invisible trackers.
  • Write to your representatives with democracy.io

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NSA Spying

EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.

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When there's something strange in your browser cache, what you gonna install? Privacy Badger! https://www.eff.org/privacyba...

Jul 28 @ 1:16pm

¿Tu cuenta y/o contenido han sido removidos injustamente de redes sociales? Cuéntanos tu historia https://onlinecensorship.org/es/ #LACIGF9

Jul 28 @ 10:52am

Listen: EFF Director of Grassroots Advocacy Shahid Buttar explains how we protect your rights online on @kkfi901fm http://www.kkfi.org/program-e...

Jul 28 @ 10:05am
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