Facebook letting users opt-in to receive encrypted emails


Users of the world’s largest social networking site can start receiving updates, notifications and other account information in the form of encrypted emails, Facebook announced.

On Monday, Facebook deployed a new feature that enables its one-billion-plus account holders to post their PGP public keys on their personal profiles.

Invented in the 1980s, PGP—short for Pretty Good Privacy—is a widely used protocol that enables emails to be sent across the internet in an encrypted format that renders the messages illegible to unintended eyes.

Facebook has not implemented any new features to encrypt messages sent between users, but enabling account holders to share their public keys makes it possible for sensitive emails concerning their profiles to be protected as never before.

“It’s very important to us that the people who use Facebook feel safe and can trust that their connection to Facebook is secure,” the website said on Monday when announcing the new feature.

Once a public key is shared, the Facebook user who posted it can check a box that will render all further emails sent from the social network site readable only if the recipient has the corresponding private key. So alerts from Facebook containing updates on the activities of acquaintances, new friend requests or pending wall posts can be encrypted, diminishing the likelihood that an eavesdropper can access your social networking info by rifling through a hacked inbox.

Additionally, any Facebook user who can view the public key of another individual can then import that information into an applicable email client and use that key to externally send their acquaintance a message that’s end-to-end encrypted.

“Security tools like PGP encryption are most effective when they are used widely,” Geoffrey King, the internet advisory coordinator for the Center to Protect Journalists, said in a statement. “Facebook has taken an important step to help protect users’ private communications by default, and make the risky environment in which journalists work a little bit safer.”

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