TeleMessage has temporarily ceased operations after hackers exploited vulnerabilities in its archived messaging services used by U.S. government officials. The breach revealed unencrypted user data, sparking concerns over national security due to potential exposure of sensitive communications. The hacker claims to have downloaded a significant amount of data, although it appears that messages from Waltz and cabinet members were not compromised. TeleMessage, owned by Smarsh, is now investigating the incident in partnership with cybersecurity experts, while the service remains suspended for precautionary reasons.