Smarsh, the Oregon-based owner of TeleMessage, said Monday it was “investigating a potential security incident” and suspended its services out of an abundance of caution.

TeleMessage lets users archive their chats in secure messaging apps. However, the hacker reportedly found that TeleMessage’s archived chat logs aren’t end-to-end encrypted, allowing them to access the contents of certain messages, government official contact information, and login credentials for the service’s backend.