What is the Principle of least privilege (POLP) in Security?

The principle of least privilege (POLP) is a concept in computer security that limits users’ access rights to only what are strictly required to do their jobs. Users are granted permission to read, write or execute only the files or resources necessary to do their jobs. This principle is also known as the access control principle or the principle of minimal privilege. POLP is often used to restrict access rights for applications, systems, and processes to “only” those who are authorized.