Slack resets passwords of shared users after data theft in 2015

Slack is going to reset the passwords of a number of users as a result of a digital hacking into the service’s systems in 2015. According to Slack, the password has been stolen from about one percent of all users.

The company told TechCrunch that it was recently made aware of a list of passwords stolen during a data breach in March 2015. That leak was already known, but at the time it was thought that only the hashed passwords had been stolen. Now it appears that the hackers have used code with which the passwords could also be intercepted in plain text, the company writes in a blog post.

It concerns a group of users who created an account with the chat app before March 2015. Users using single sign-on are not affected. According to Slack, this would be one percent of all users the company had in 2015. Slack has reset the passwords of all accounts that haven’t since 2015. Affected accounts will receive a warning from the company.