What is Two-Factor Authentication? - And Why You Should Use It

Last night I had a chat with someone who had her Netflix account hacked. The hacker changed her password and the email address associated with the account. This prompted a bigger conversation about how accounts get hacked and some simple steps to prevent being hacked. Those steps include not using the same password for multiple services, creating strong passwords, and using two-factor authentication whenever it is offered.

Two-factor authentication, sometimes called two-factor verification, is a system in which you have to enter a password and then receive an SMS (text) message or email through which you verify that you actually tried to sign into your account. I use this on every service that offers it including my Google account and all bank accounts. This is great because if someone does try to sign into one of my accounts from a computer or phone other than mine, I immediately get a text message. My friends Lee and Sachi LeFever at Common Craft have a great video that explains two-factor authentication. You can see that video here.


Unfortunately, Netflix doesn't currently offer two-factor authentication to protect users' accounts. Fortunately, while it's massively inconvenient to have your Netflix account hacked there isn't too much damage that a hacker can do with your Netflix data. The best thing that you can do to protect your Netflix account is to use a strong password that you only use on Netflix. Again, Common Craft has a good video about creating strong passwords.


For help in creating a strong password consider using a tool like Wolfram Alpha's password generator.

Common Craft videos can be reviewed online for evaluation purposes. To use embed them into a blog as I've done requires a membership (which are very reasonably priced).

Disclosure: I have an in-kind relationship with Common Craft.

ClassHook Gets a New Look

ClassHook is a service that I recommend trying when you're looking for video clips to illustrate a concept and don't want just another "how to" video. ClassHook provides a search tool for finding clips from well-known television shows and movies to be used in your lessons. You can search according to topic, standard, grade level, and length of video clip. As good as ClassHook is, the user interface was a little clunky until yesterday when a new user interface was revealed.

ClassHook's new user interface streamlines the search and browse section of the site. Now when you click on "browse" you will find all of the search refinement options listed in one convenient place next to the clips that you're browsing through.

When you do find a video clip that you want to use in ClassHook you'll find that the tools for working with that video are easier to access than they previously were. When you select a video all of the tools for adding discussion questions, creating pause prompts, and sharing the clip are clearly labeled directly above and below the video.

My favorite ClassHook feature is the Pause Prompts feature. This lets you add questions to the timeline of the video. The question appears and pauses the video when it reaches the point in the video that you have specified. Watch my video that is embedded below to see how Pause Prompts work.