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Cloud

What is Access Control List?

A list of permissions that specifies which users or systems can access a resource and what operations they can perform.

Also known as: ACL

ACLs are the fundamental mechanism for controlling who can do what in a system.

Types

  • Filesystem ACLs: Control read/write/execute permissions on files
  • Network ACLs: Firewall rules that allow or deny traffic
  • Application ACLs: Determine which users can access features

Privacy Relevance

  • Misconfigured ACLs are a leading cause of data breaches
  • Cloud storage buckets with public ACLs have exposed billions of records
  • Principle of least privilege: grant only the minimum access needed

Related Terms

Zero-Trust Architecture

A security model that assumes no user, device, or network is inherently trusted, requiring continuous verification for every access request.

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