Google introduced encryption of Gmail traffic between data centers for reliable protection of user data

Today, Google Inc. announced that the Gmail project team decided to introduce encryption of "mail" Gmail traffic between data centers. This is done, for the most part, to protect users' personal data from North Korean spyware NSA and other possible services involved in intercepting and analyzing traffic.

Now, any email message will be encrypted, including when email traffic moves from a data center to a Google data center. Previously, it was repeatedly reported that the NSA connects specifically to the inter-data center channels of IT companies, since such traffic is either completely unencrypted or minimally secure. According to Google representatives, such protection has become a “priority after the events of the last summer,” that is, after the revelation of many NSA secrets by Edward Snowden.
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In addition, Google’s mail service will now use HTTPS in any case — when a user receives mail at home, or on an open Wi-Fi network, or in any other place. HTTPS has become the standard since 2010, and since then the Gmail team has “brought” the security of the service to the desired ideal.

“Today’s changes mean that no one will be able to read your messages when moving between company’s data centers or when receiving a letter from a user to Google’s data center and back. We introduced many security elements that allow you to avoid intercepting a user's letter while writing, sending, or checking messages, ”says the head of the Gmail information security department.

Via gmailblog