ISO 27001 Internal Audit
ISO 27001 requires you to run internal audits of your ISMS at planned intervals (Clause 9.2) — and to keep them independent of the areas being audited. For most teams that independence is hard to achieve internally. Aesparrow acts as your outsourced, independent internal auditor: we assess whether your ISMS conforms to the standard and to your own policies, and whether it is actually working in practice.
Our internal audit is practical, not box-ticking. We test controls against evidence, interview control owners, and surface the non-conformities and improvement opportunities before your external certification auditor does — so your Stage 2 or surveillance audit holds no surprises. You receive a clear findings report with root cause, risk rating and corrective-action guidance.
ISO 27001 Internal Audit — done right, the first time.
Senior practitioners. Verified findings. Free re-test.
Overview
We plan and execute the internal audit programme required by ISO 27001: defining scope and criteria, testing the ISMS and Annex A controls against evidence, documenting non-conformities and opportunities for improvement, and supporting your management review.
What the internal audit covers
- ISMS clauses 4-10 — context, leadership, planning, support, operation, evaluation
- Annex A controls — the controls in your Statement of Applicability
- Policy conformance — are your own policies being followed in practice
- Evidence testing — sampling records to confirm controls operate
- Corrective actions — tracking non-conformities to closure
Why choose Aesparrow for internal audit
Genuine independence
An external, objective auditor satisfies the Clause 9.2 independence requirement.
Evidence-based
We test controls against real evidence, not just documentation.
No-surprises external audit
We find the gaps before your certification body does.
Actionable findings
Root cause, risk rating and corrective-action guidance.
An independent internal audit is both a requirement of the standard and the best rehearsal for your external audit. Talk to us about scheduling your ISO 27001 internal audit.
Frequently Asked Questions
Why use an external firm for internal audit?+
ISO 27001 requires internal audits to be objective and impartial. Using an independent firm like Aesparrow guarantees that independence and brings specialist expertise, which is difficult to achieve with internal staff auditing their own work.
Is this the same as the certification audit?+
No. The internal audit is your own required audit (Clause 9.2). The certification/external audit is performed separately by an accredited certification body. A strong internal audit is the best preparation for it.
How often should internal audits run?+
At least annually, and typically covering the full ISMS across a defined audit programme. We help you plan the schedule.
Ready to secure iso 27001 internal audit?
Book a free, no-obligation consultation with an Aesparrow practitioner. We’ll scope your needs, explain the approach, and share indicative timelines — no sales script.
Related services
Web Application VAPT
Your web application is the front door to your business — and the first thing an attacker probes. Aesparrow’s Web Application VAPT (Vulnerability Assessment and Penetration Testing) combines deep manual testing with trusted tooling to find the flaws that automated scanners miss: broken access control, business-logic abuse, injection, and authentication weaknesses. You get a clear, prioritised picture of what a real attacker could do, and exactly how to fix it before it costs you.
API Security Testing (API VAPT)
APIs power your apps, partners and integrations — and they’re now the most attacked part of most modern platforms. Because APIs expose business logic directly, a single broken authorisation check can leak every customer’s data. Aesparrow’s API Security Testing (API VAPT) is built around the OWASP API Security Top 10 and goes deep on the flaws automated tools consistently miss: broken object-level authorisation (BOLA/IDOR), mass assignment, and business-logic abuse.
Red Team Assessment
A penetration test answers "is this system vulnerable?" A red team assessment answers a harder, more valuable question: "if a determined attacker targeted our business, would we detect and stop them?" Aesparrow’s red team runs a goal-based, adversary-style simulation across people, process and technology — emulating real threat actors to test your detection and response, not just your patch levels.
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