French government messenger Tchap breached: attackers accessed public chats and user data
By
Dirk Knop
A second-rack bagel that's nearly first-rack. Tasty stuff.
Summary
France's state digital agency DINUM is investigating a data breach on Tchap, the French government's encrypted instant messaging service. On June 7, 2026, attackers compromised a user account, gaining access to unencrypted public chats and messages, as well as information on thousands of users. Private encrypted chats remained protected. The breach was announced via the government portal numerique.gouv.fr.
Key quotes
· 3 pulledFrance's state digital agency DINUM is investigating a breach into an account of the government messenger Tchap.
The attacker(s) reportedly gained access to chats and messages as well as information of thousands of users.
Since the service encrypts private chats and messages, attackers can only access unencrypted public chats and messages even in the event of an account compromise.
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