Defensive Design

Defensive Design

1. input Sanitisation

   • Cleaning up input data / removing unwanted data
   • Removing special characters
   • Preventing SQL Injection

2. Validation

   • Checking wether input data is aloud / is sensible
   • Goals cannot be less then one

3. Verification

   • Checking whether data has been entered correctly
   • Double entry / visual check

4. Authentication

   • Ensuring only allowed / authorised users can gain access
   • E.G Usernames and passwords

5. Maintainable code

   • To allow other programs to understand the code
   • Comments , indentation , meaningful