Security Questions

A security challenge question is a common way of authenticating a customer's identity.  They are a form of shared secret.

Banks have used questions to be sure they authenticate their customers since at least the early 1900s.

In the early 2000s, security questions became common on the internet, as a way to let customers get a new password: a password reset.

The best questions have answers that are:

• Simple
• Memorable
• Not limited to a small list of answers
• Cannot be guessed or researched easily
• Do not change overtime

Source: https://en.wikipedia.org/wiki/Security_question

A video from cacrsecuritymatters: 

1. Which is better?
   1. What was your childhood nickname?
   2. What is your mother's maiden name?
2. Which is better?
   1. What is the name of the High School you graduated from?
   2. What is the name of your favorite childhood friend?
3. Which is better?
   1. In what year was your father born?
   2. In what city or town did your mother and father meet?
4. Which is better?
   1. What was the name of your first pet?
   2. What is your pet's name?