ISO 27001 Internal Audit Services
Protect what matters with ISO 27001 Internal Audit Services
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.
- Certified senior practitioners
- Audit-ready reporting
- Free re-test included
ISO 27001 Internal Audit Services — 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
- 1
Genuine independence
An external, objective auditor satisfies the Clause 9.2 independence requirement.
- 2
Evidence-based
We test controls against real evidence, not just documentation.
- 3
No-surprises external audit
We find the gaps before your certification body does.
- 4
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.
Why ISO 27001 Internal Audit Services matters
Independent research on the cost and causes of breaches — the risks this service helps you reduce.
US$4.44M
global average cost of a data breach in 2025.
241 days
mean time to identify and contain a breach in 2025.
20%
of breaches began with exploitation of a vulnerability, up 34% in a year.
Frequently Asked Questions
Why use an external firm for internal audit?
Is this the same as the certification audit?
How often should internal audits run?
Ready to secure your business with ISO 27001 Internal Audit Services?
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.
Standards & references
Related services
Guides & answers
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Let’s find the gaps before someone else does.
Tell us what you need tested for a fixed-scope quote, or talk it through with an Aesparrow practitioner — no obligation, no sales script.