We are writing to notify you of a security incident that happened between August 26 and August 31, 2019. We became aware of it on August 31, resolved it immediately, and have been assessing the scope of impact since then. Based on that ongoing assessment, we have concluded that the incident involved your workspace. We are very sorry for any issues this may cause.
1% of Slack users still had compromised accounts (after 4 years)
Buffer was compromised and did an annouce about it.
Researcher discovered eight unsecured databases exposed online that contained approximately 60 million records of LinkedIn user data.