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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'm not someone who works on the practical side of security, but as a computer scientist, I do not agree that it is "hacking". That contradicts my understanding of "hack" versus other types of exploits, but you are correct that the distinction is generally not that important. A security problem is a security problem regardless what it's called