Summary
- Authy is a 2FA app that recently suffered a data breach that exposed more than 33 million phone numbers.
- An unsecured API endpoint allowed threat actors to collect linked numbers.
- If you think your personal information might be among the 33 million leaked numbers, consider securing your accounts with 2FA and be wary of SMS phishing attacks.
Unfortunately all of them do, and if you don’t give it to them they won’t let you sign up
Is there a service that can’t be used without a phone number and has no alternative?
Phone service.
🙃 There might be a few exceptions.