Now it was discovered that all three billion accounts at Yahoo 2013 were affected by data theft. Hackers were able to gain access to the phone numbers, names, e-mail addresses, etc.. The biggest data theft was probably bigger than expected. The only good thing about this story is that the passwords weren't hacked. So the question now is why Yahoo didn't admit to stealing the data until so late.
I would recommend using the 2-factor authorization as a measure. I use the App Authy. In my opinion, this is better than the Google authenticator app.
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