Three years later, Facebook has now followed suit, the latest in a string of security-conscious measures the social network has recently enacted.

Facebook Chief Security Officer Alex Stamos announced the latest protection in a post on the site. "While we have always taken steps to secure accounts that we believe to have been compromised, we decided to show this additional warning if we have a strong suspicion that an attack could be government-sponsored," Stamos wrote. "We do this because these types of attacks tend to be more advanced and dangerous than others, and we strongly encourage affected people to take the actions necessary to secure all of their online accounts."

Those steps range from turning on Login Approvals (Facebook's version of two-factor authentication) to avoid being compromised in the first place to replacing their computers altogether, in the event of a confirmed attack.