Google unveiled a service that automatically displays a warning to users who may be the target of state-sponsored phishing or malware attacks.
Company representatives aren't saying precisely what criteria is used to determine when a particular attack is sponsored by a government actor, because that information could be used to evade detection. They went on to say very generally that the company relies on "detailed analysis" and victim reports that "strongly suggest the involvement of states or groups that are state-sponsored."
The warning comes in the form of a red banner just above the Google search bar that reads: "Warning: we believe state-sponsored attackers may be attempting to compromise your account or computer." It includes a link to information users can use to help lock down their computers, smartphones and Google accounts.