Gmail is 21 years old today and for its birthday present it wants to give the gift of easier encryption for all. This is a service that’s aimed at companies in regulated industries to more easily encrypt their emails,

According to three officials who spoke to the Washington Post, members of President Trump's National Security Council, including Waltz, have conducted government business over personal Gmail accounts.

Emails sent with Gmail’s end-to-end encryption are extremely secure because only the sender has control over the encryption key, which is stored outside of Google’s infrastructure. Users can click the padlock by the Bcc button and press Turn On under the Additional Encryption’ option to apply it.

The Gmail accounts were used to discuss “sensitive military positions and powerful weapons systems relating to an ongoing conflict,” according to the Post, citing three unnamed government officials and emails reviewed firsthand by the newspaper.

Google is updating Gmail to allow enterprise users to send encrypted messages to any inbox in just a few clicks. Google says it’s developed a new encryption model that, unlike the current encryption feature on Gmail, doesn’t require senders or recipients to use custom software or exchange encryption certificates.

National Security Adviser Michael Waltz is under scrutiny for using his personal Gmail account to discuss government matters, including military positions and weapons systems. The revelations follow an earlier controversy in which he inadvertently invited a journalist to a Signal chat about a planned military strike.