Elon Musk is taking aim at federal workers and organizations, through the Department of Government Efficiency (DOGE). Now, Musk-owned X (formerly Twitter) is blocking Signal.me links, a URL used by encrypted messaging service Signal that allows people to quickly contact others directly, the blog Disruptionist reports. Federal workers have used Signal to covertly report relevant and dangerous activities.

Anyone who attempts to post a Signal.me link in a DM, public post or on their profile page receives error messages such as, "This request looks like it might be automated. To protect our users from spam and other malicious activity, we can’t complete this action right now. Please try again later." Other responses include, "We can’t complete this request because this link has been identified by X or our partners as being potentially harmful." Engadget confirmed the block in a test.

Users who try to click existing Signal.me links get a message stating, "Warning: this link may be unsafe. The link you are trying to access has been identified by X or our partners as being potentially spammy or unsafe, in accordance with X's URL Policy." They can choose to ignore the warning and proceed to the link.

Musk is working with President Trump to cut federal workers across the board. Over 9,500 employees were fired on Friday, February 14, alone.