Social media companies are removing any mentions of the whistleblower in the Trump-Ukraine scandal, according to a report.

Though the whistleblower’s name has been percolating online — including in the widely-read Drudge Report — Facebook said publishing the name on its platform violated their “coordinating harm policy,” The Washington Post reported. YouTube was also taking similar steps.

On Saturday, Twitter was the only major social network to resist the change, with users still free to publish the name of the alleged whistleblower.

Tweets from big-name conservative Twitter users like Candace Owens and Donald Trump, Jr. revealing the name have gone viral in recent days.

“Per our private information policy, any tweets that include personally identifiable information about any individual, including the alleged whistleblower, would be in violation of the Twitter Rules,” The Post reported.