X (formerly Twitter) has implemented a block on Signal.me URLs, preventing users from sharing contact information through the encrypted messaging platform’s link-sharing feature. The block affects attempts to post Signal.me links in public posts, direct messages, and profile bios, with users receiving error messages citing potential spam or malicious activity.

Key Points:
– Only Signal.me URLs are affected; other Signal domains (Signal.org, Signal.link, Signal.group) remain accessible
– Previously shared Signal.me links remain clickable but display safety warnings
– Other messaging platforms’ contact links, including Telegram, continue to function normally
– The timing and reasoning behind the block remain unclear

The block’s implementation has sparked speculation about potential political motivations, particularly given X’s history of temporarily blocking competing platforms under Elon Musk’s ownership. Some observers have noted the timing coincides with recent controversies surrounding the Department of Government Efficiency (DOGE) and federal employees’ use of Signal for secure communications.

Security researcher Tommy Mysk, who initially discovered the block, compared the situation to X’s previous restrictions on Mastodon links. Neither X nor Signal has officially commented on the situation, leaving users questioning the platform’s motivations for implementing this specific restriction.

The block significantly impacts Signal users who rely on the convenient link-sharing feature to connect securely without exchanging phone numbers directly.