Cyber Security Glossary

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Cyber security glossary provides the cyber security community with knowledge of and insight on the industry’s significant terms and definitions. This list contains key terminology and is one of the most extensive cyber security glossary/vocabulary resources online. Start your search on the critical terms you need to know as a security professional.

Letter A


The ability and means to communicate with or otherwise interact with a system, to use system resources to handle information, to gain knowledge of the information the system contains, or to control system components and functions.

Access and Identity Management

Synonym(s): identity and access management

Access control

The process of granting or denying specific requests for or attempts to:

  1. Obtain and use information and related information processing services.
  2. Enter specific physical facilities.