In May 2017, the company sent a security notice to users warning them that their data had been breached after a connected third-party was targeted by hackers.
The breach affected a server in the company's cloud web tier and for some (reported as 0.05% of cases) messages and content in rooms may have been accessed using account information including names, email addresses and hashed passwords.
The company invalidated passwords on all affected accounts (sending users advice on how to reset their passwords) and they rolled out an update to fix the flaw.
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