Chat-based systems and methods for data loss prevention are described. In one embodiment, a method includes receiving an enable command from a chat service by a data loss prevention service, scanning data from a data source with the data loss prevention service in response to the enable command to detect private information in the data, generating an alert for the private information by the data loss prevention service, and sending the alert to the chat service to cause the chat service to broadcast a chat alert to a group of users.