(Bloomberg) — Twitter Inc. blamed Chief Executive Officer Jack Dorsey’s mobile phone carrier for a hack of his Twitter account that sent out a stream of offensive tweets on Friday.“The phone number associated with the account was compromised due to a security oversight by the mobile provider,” Twitter

This is why you should not use your phone as your two factor authentication device, it\’s better to use a software based solution like Google Authenticator or Microsoft Authenticator.

A hardware/software solution is even better like a keyfob.