Storing sensitive information

1. Storing sensitive information in memory
2. Storing sensitive information in a public file outside the application's directory
3. Storing sensitive information in a public file inside the application's directory
4. Storing sensitive information in a private file outside the application's directory
5. Storing sensitive information in a private file inside the application's directory
6. Storing sensitive information in a public protected database
7. Storing sensitive information in a protected database
8. Storing sensitive information in a public unprotected database
9. Storing sensitive information in the application source code
10. Storage or use of previously found sensitive information
11. Storing sensitive information in the keyboard cache