What are the principles in providing the security for the computer programs? - Web Security

What are the principles in providing the security for the computer programs?

- The principle of least privilege is used to provide more security to the computer programs.

- The principle allows the designing of the program such that any unauthorized access is not allowed and only the person who owns the program will be able to access it.

- The services provided should be able to access only those products that need the services.

- Web servers that are involved in responding the queries of the web users provide only accessing to the HTML files that will serve the purpose of the programs.

- Computer programs should be made such that it provides secure features of logging into the program with proper authentication.