2 factor authentication hacked

Communities Science, Engineering, & Security
1

Apparently, two factor authentication on Google, Yahoo, LinkedIn and others can be hacked if you have it set to voice and your voicemail doesn't have a proper password.

http://blog.shubh.am/how-i-bypassed-2-factor-authentication-on-google-yahoo-linkedin-and-many-others/

3

It seems that way.

I guess it depends on which telecom company you use. Just make sure your voicemail option doesn't exist (or is password protected), i.e. that someone who knows your phone number can't just dial into the voicemail number and set it up for the exploit.