It's the company's latest takedown for inauthentic behavior.

The site, which launched with the aim of fighting "viewpoint censorship," has drawn the scrutiny of cybersecurity researchers.

The takedown spotlights tech firms' fraught approach to stifling disinformation.

It's a major blow to Israeli software surveillance company NSO Group.

The move is the result of publication of a search warrant from the Mueller investigation.

After a months-long court battle, Facebook has reinstated four accounts of people employed by Israeli software surveillance firm NSO Group.