Passwords Aren’t Enough

Two weeks ago, hackers compromised the password of the Associated Press Twitter account, allowing the hackers to send out fictitious tweets to all of the @AP followers. These tweets falsely reported that a bomb had exploded at the White House and that the President was injured, which sent financial markets into a brief but startling tailspin.

This was a serious situation that shows strong passwords can’t be the only security measure. Following the AP hack, Twitter sent out instructions to o...