Breachesby GlyphSlack
Disclosed Mar 27, 2015Unverified
Slack's central user database breached, exposing usernames and password hashes
Slack announced in a blog post that attackers had accessed its user database of usernames, emails and hashed passwords, and it rolled out two-factor authentication in response.
What is known
| People affected | Not stated in the sources we have |
|---|---|
| Disclosed | Mar 27, 2015 |
| Attack | Hacking |
| Data exposed | Credentials and tokensEmailsPasswords |
| Sector | Tech · US |
| Status | Unverified: not yet confirmed by an official notice, a filing or the organization |
Sources
Notices filed
History of this record
First recordedby seedSource
First seen 2026-09-25 (Research). Record counts are as reported. Not legal advice.