Facebook: Apps Must Support SHA-2 Encryption by Oct. 1

Facebook followed up its test of improved encryption for notification emails with a mandate that developers move to a more secure standard for their applications.

Facebook followed up its test of improved encryption for notification emails with a mandate that developers move to a more secure standard for their applications.

As of Oct. 1, apps that do not support SHA-2 certificate signatures will be unable to connect to the social network, production engineer Adam Gross wrote in a post on the Facebook developer blog.

Gross explained the change as follows:

These changes are part of a broader shift in how browsers and websites encrypt traffic to protect the contents of online communications.

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