Access Control

A process by which entry into and internal movement within a facility is managed.

Source: API RP 781 Security Plan Methodology for the Oil and Natural Gas Industries.1st Ed. September 2016. Global Standards

Access Control

The process of granting or denying specific requests for or attempts to: 1) obtain and use information and related information processing services; and 2) enter specific physical facilities.

Adapted from: CNSSI 4009

Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies ( as of 11 November 2015, Global Standards


Access Control

Means to ensure that access to assets is authorized and restricted based on business and security requirements.

Source: ISO/IEC 27000:2014, Information technology — Security techniques — Information security management systems — Overview and vocabulary, Third Edition, January 2014. Global Standards


Access Control

Protection of system resources against unauthorized access; a process by which use of system resources is regulated according to a security policy and is permitted by only authorized entities (users, programs, processes, or other systems) according to that policy [11].

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard


Canadian Standards Association

The control of persons, vehicles, and materials through entrances and exits of a restricted area.

  • Note: Access control is an aspect of security that often utilizes a combination of electronic and hardware systems and specialized procedures to control and monitor movement into, out of, and within a restricted area. Access to various areas might be limited to place or time or a combination of both.

(Source:, 2006)

Source: Canadian Standards Association, Z246.1-09, Security management for petroleum and natural gas industry systems, August 2009, Regional Standards

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