ITGC vs ITAC: what IAM and audit teams need to know

TL;DR: ITGCs and ITACs both protect integrity, availability and confidentiality, but they operate at different layers of the enterprise control stack, according to Zluri. The practical issue is not choosing one over the other, but matching broad infrastructure controls and application-specific controls to the right governance problem.

NHIMG editorial — based on content published by Zluri: Access Management ITGC vs ITAC, and what is the difference between the two?

Questions worth separating out

Q: What is the difference between ITGC and ITAC in audit and access governance?

A: ITGC governs the broader IT environment, including access management, change management, patching, backup and physical security.

Q: When should organisations prioritise ITGC over ITAC?

A: Organisations should prioritise ITGC when the main risk is infrastructure-wide weakness, such as poor access governance, weak change control or unreliable recovery.

Q: What breaks when application controls do not cover service accounts and integrations?

A: Application controls break when non-human identities can write, move or approve data without the same review path as human users.

Practitioner guidance

• Separate infrastructure and application control evidence Build two evidence packs, one for ITGC and one for ITAC, so auditors can test platform governance and application integrity independently.
• Tie application permissions to business workflow Review who can enter, change, approve and export records inside each critical application, then align those permissions to segregation of duties.
• Include non-human identities in application reviews Check service accounts, tokens and integration identities that write to or move data between applications, because those identities can bypass human review paths.

What's in the full article

Zluri's full article covers the operational detail this post intentionally leaves for the source:

• Line-by-line breakdown of the six ITGC components and three ITAC components
• Examples of input, processing and output controls in business applications
• The access review workflow used to identify and remediate permission mismatches

👉 Read Zluri's comparison of ITGC vs ITAC for audit and access control →

ITGC vs ITAC: what IAM and audit teams need to know?

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