Cybersecurity incident — 2015-03-27 00:00:00
Affected organization: Slack
Affected country: United States of America
Industry: Information
Event type: Exploitive
Event subtype: Exploitation of Application Server
Motive: Undetermined
Actor: Undetermined
Actor type: Criminal
Actor country: Undetermined

Slack announces on its corporate blog that it was hacked over the course of four days in February, and that some number of users' data was compromised. The breach releases email addresses and potentially phone numbers of its 500,000 users.