Slack announces security breach

Slack announced that they were hacked, and what their plans are to mitigate such attacks in the future.

We were recently able to confirm that there was unauthorized access to a Slack database storing user profile information. We have since blocked this unauthorized access and made additional changes to our technical infrastructure to prevent future incidents. We have also released two factor authentication and we strongly encourage all users to enable this security feature.

Read more about the incident on their blog.