Zoph, who co-founded Thinking Machines Lab alongside Mira Murati and also served as the startup's CTO, led a brief stint at OpenAI and is now at Google.

The ATF is the latest federal government agency in recent years to notify Congress of a "major incident" involving its cybersecurity.

The startup is only a year old but it has already generated a massive amount of hype (and money) while also spurring privacy concerns.