The increasingly popular team chat platform Slack confirmed in a blog post today that a database containing user profile information had been breached. Slack says the database contained usernames, email addresses, hashed passwords, and information users could connect to their account like Skype names. There's no evidence that the hackers were able to decrypt user passwords, but they did have access to the above-mentioned information.

Slack says it has blocked the unauthorized access, and - in the same blog post - announced the launch of a two-factor authentication option for its users, along with a "password kill switch" for team owners.

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