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Authy got hacked, and 33 million user phone numbers were stolen
(appleinsider.com)
This is a most excellent place for technology news and articles.
On Android, I replaced Authy with the open-source Aegis app. It's just as functional, allows exporting, and doesn't tie your data to your phone number (nor store it on a central system--not sure if Authy does this or not).