The popular group chat tool Slack suffered a hack of its central database last month, the company admitted Friday, potentially compromising users’ profile information like log-on data, email addresses and phone numbers.

The database also holds any additional information users may have added to their profiles like their Skype IDs.

The passwords were encrypted using a hashing technique. There was no indication the hackers were able to decrypt the passwords, Slack Technologies said in a blog post. No financial or payment information was accessed or compromised, it said.

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