ISC — Quick Sheet
Information Technology (IT) Audit & Advisory Services
Read time: ~5 minutes
Engagements
Information technology (IT) audit for financial statements · integrated audit of internal control · System and Organization Controls (SOC) examinations · cybersecurity assessments · implementation reviews · analytics and forensics · agreed-upon procedures.
Approaches
Around the computer (inputs vs outputs) · through (test processing: test data, integrated test facility, parallel simulation) · with (analytics on full populations).
Testing
- IT general controls (ITGCs): sample across period.
- Automated controls: test one + ITGCs; benchmarking later.
- IT-dependent manual controls: test the review and the report.
- Information produced by the entity (IPE): completeness and accuracy — logic, reconciliations, record counts.
Independence
Designing or implementing an attest client's financial system → impaired. Issuers: prohibited by the Sarbanes-Oxley Act (SOX). Recommending is fine; management decides.
Frameworks
Control Objectives for Information and Related Technologies (COBIT) 2019 · National Institute of Standards and Technology (NIST) · consulting standards.
Exam traps
- Auditing "around the computer" ignores processing — acceptable only for simple systems with a clear audit trail.
- When running test data through the client's program, confirm it's the version actually used in production.
- Benchmarking an automated control relies on change management having been effective all year.
SimplyCPA quick sheet · simplycpa.in/quick-sheets/isc/it-audit-and-advisory