X is blocking Signal domain links in DMs, labeling them as potentially harmful or spam

X has begun blocking links to the Signal.me domain, which is used for sharing contact details on the Signal messaging platform. Users trying to post these links in direct messages, public posts, or on their profiles are encountering error messages warning that the links are “potentially harmful,” “considered malware,” or “might be spam,” depending on the X version.

This blocking was first noticed by security researchers at Mysk and later confirmed by Matt Binder from Disruptionist. While previously posted Signal.me links remain visible, they now come with warnings discouraging users from clicking due to security risks; however, other Signal-related URLs can still be shared on X.

This move comes as the Department of Government Efficiency (DOGE) intensifies its scrutiny of federal entities, prompting employees to use Signal for secure communication and whistleblowing. Some speculate the block is politically motivated, but X has yet to explain why only Signal.me links are affected.