May 22, 2013
The opt-in feature requires users to receive an access code on their smartphone via SMS text messaging.
Earlier in the month, it was announced that Twitter employees were currently testing the Twitter two-factor authentication setup. The tests began after several high profile accounts including Burger King and The Associated Press were hacked and disturbing messages were posted to their accounts.
There are some limitations to the type of two-factor authentication being used. Specifically, many high-profile account users have multiple workers who access their Twitter account. Because two-factor authentication relies on an SMS text message to a single smartphone, it won’t work for multiple users. read more