Warns users of nation-state intrusions

Facebook starts notifying users if it believes their accounts have been targeted or compromised by an attacker suspected of working on behalf of a nation-state. Whenever a user’s account is accessed by a new device or browser, the company will send a security code to the account owner’s phone to verify that only the account user is trying to access the account.

The security of people’s accounts is paramount at Facebook, which is why we constantly monitor for potentially malicious activity and offer many options to proactively secure your account. Starting today, we will notify you if we believe your account has been targeted or compromised by an attacker suspected of working on behalf of a nation-state.