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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.
I expect most usage of authy was based on the open TOTP protocol that Google etc use. The additional benefit was backing up those codes to the authy account, hence the avenue of attack on those accounts.
I agree though, Authy, especially since it was bought out, should be avoided. They deprecated their desktop app which was the only semi useful part of their suite, but I stopped using it years ago.