Defensive Design

Defensive Design

1. Authentication

   • Confirms the identity of a user. A common way is to use passwords

2. Input sanitation

   • Cleaning up inputted data/removing unwanted data
   • For example removing spaces

3. Validation

   • Checking whether data has been inputted sensibly and follows the criteria
   • Length can not be less than 8

4. Verification

   • Checks whether data has been inputted correctly for example by double entering an email address twice

5. Maintainable code

   • To allow other programmers to understand the code for example by commenting and indenting.