"Slack said most of its users weren’t affected. But the company left open the possibility that some user communications were accessed.Slack Discloses Breach Amid $160 Million Fundraise - Digits - WSJ
“If you have not been explicitly informed by us in a separate communication that we detected suspicious activity involving your Slack account, we are very confident that there was no unauthorized access to any of your team data (such as messages or files),” Slack’s Reeve said in a written statement.
On its website, the company said hackers accessed a database that contained usernames, email addresses and encrypted passwords. The company said it was confident that no user passwords could be decrypted."
Monday, March 30, 2015
Slack Discloses Breach Amid $160 Million Fundraise - Digits - WSJ
Slack is now a multi-factor authentication advocate