The Internet has become an indispensable tool for purchasing items and managing personal information. We trust vendors with our data and assume that they will safeguard it and prevent unauthorized access. Yet, the headlines are filled with news of data breaches and other hacks. The latest story is that Dropbox was hacked although the company says that it was not their servers. Regardless, users need to be more sensitive than ever to data breaches and one of the most important tools in the battle against hackers is two-factor authentication (TFA).