Facebook: 95% of Notification Emails Encrypted Thanks to Providers’ STARTTLS Deployment

STARTTLSUpdateChart650Facebook offered an update on the state of the deployment of the STARTTLS encryption standard, which it originally wrote about in May, saying that 95 percent of its notification emails are now successfully encrypted with both Perfect Forward Secrecy and strict certificate validation.

The social network said in May that only 28.6 percent of its outbound notification emails were successfully encrypted and passed strict certificate validation, with that figure jumping to 58 percent when factoring in opportunistic encryption.

Facebook Messaging Integrity Engineer Michael Adkins wrote in a note on the Protect the Graph page:

When we posted in May about the state of STARTTLS deployment, we had no idea that we would see such significant changes to email encryption across the industry in just a few short months. We previously reported that only 28.6 percent of our outbound notification emails were successfully encrypted and passed strict certificate validation (58 percent if you count opportunistic encryption). Since STARTTLS encryption requires both sides to deploy it, we encouraged others to take the next step. As a result of recent changes by major providers, most notably Microsoft and Yahoo, 95 percent of our notification emails are now successfully encrypted with both Perfect Forward Secrecy and strict certificate validation.

In addition to thanking these service providers for implementing best practices and allowing stronger encryption to take hold, we’d like to encourage any remaining providers to deploy STARTTLS as soon as possible.

Image courtesy of Shutterstock.

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