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Least privilege is
|“||the principle that requires each user in a system to be granted only the privileges needed for the performance of authorized tasks.||”|
|“||the security objective of granting users only those accesses they need to perform their official duties.||”|
|“||[a] foundational security principle that states that every program and every user of the system should operate using the least set of privileges necessary to complete the job. Primarily, this principle limits the damage that can result from an accident or error. It also reduces the number of potential interactions among privileged programs to the minimum for correct operation, so that unwanted, unintentional, or improper uses of privilege are less likely to occur. ||”|
|“||[t]he technique of assigning privileges for doing certain functions to only those that require them.||”|
"For example, restricting the ability to create new user accounts to only the system administrator or a user that should only be able to query a database, but has privileges to delete the folder containing the database file."
- ↑ NSTISSAM INFOSEC 1-99, at 17.
- ↑ NIST Special Publication 800-12.
- ↑ NIST Special Publication 800-160, at B-7.
- ↑ Common Cybersecurity Vulnerabilities in Industrial Control Systems, at 67.
- ↑ Id.