Google's Threat Analysis Group (TAG) is an in-house counterintelligence task group. Led by Shane Huntley, the group is self-described as “a specialized team of security experts that works to identify, report, and stop government-backed phishing and hacking against Google and the people who use [their] products.”1)
In the summer of 2018, TAG squashed “an allegedly Iranian-backed disinformation campaign by pulling dozens of YouTube channels that were using fake accounts to push misleading political stories primarily about the Middle East.”2)
TAG is “staffed partly by former government agents.”3)