ISO 27001, step by step.
ISO/IEC 27001 is the security certificate enterprise customers and tenders ask for most. Here is what the 2022 version contains, how certification works, and what it really takes to get there.
ISO/IEC 27001 is the international standard for an information security management system (ISMS): a working set of policies, risk assessments, controls and reviews that keeps information safe. The 2022 version groups its 93 Annex A controls into four themes. An accredited certification body audits you and issues a certificate valid for three years, with surveillance audits every year. Certificates to the old 2013 version expired on 31 October 2025.
Checked against official sources on . General information, not legal advice.
- Current version
- ISO/IEC 27001:2022
- Controls
- 93 in 4 themes
- Certificate
- 3 years, yearly audits
- Typical readiness
- 6–16 weeks
93 controls, four themes.
You do not have to apply every control. You assess your risks, pick the controls that treat them, and explain each choice in a Statement of Applicability.
The 2013 version is gone.
- OCT 20222022 version published
- FEB 2024Climate amendment added
- OCT 20252013 certificates expire
The 2024 amendment asks organisations to consider whether climate change is a relevant issue for their ISMS. Any certificate still showing the 2013 version is no longer valid.
Six steps, two audits.
- Weeks 1–2
Scope and gap check
Which teams, sites and systems are in scope, and where you stand against every clause and control.
- Weeks 2–4
Risk assessment
What could go wrong, how likely and how bad, and the controls you choose to treat each risk.
- Weeks 3–10
Policies and controls
Policies people actually follow, and controls that run: access reviews, backups, logging, supplier checks.
- Weeks 6–14
Evidence
Controls running long enough to leave records an auditor can test.
- Weeks 12–16
Internal audit and review
A dress-rehearsal audit, then a management review signed off by your leaders.
- Certification body
Stage 1 and Stage 2
Stage 1 checks your documents and readiness; Stage 2 tests that the ISMS works in practice.
Usually asked for when you sell to big customers.
- Enterprise or government customers ask for it in tenders and security questionnaires
- You handle customer data as a SaaS, IT services or BPO company
- You want one recognised proof of security for India, the Gulf and Europe
- You need a solid base for DPDP, SOC 2 or ISO 42001 work
Is it mandatory? For most companies, no law requires it. Customers, tenders and sector regulators often do.
Our own ISO/IEC 27001 certification is in progress. We will say so plainly until it is issued.
ISO 27001 questions, answered.
Q01Is ISO 27001 mandatory in India?
Q02What changed in the 2022 version?
Q03How long does certification take?
Q04What does it cost?
Q05ISO 27001 or SOC 2?
Q06Do you issue the certificate?
Checked against the official text.
This guide is general information, not legal advice. Rules and dates change, so check the official text and ask your lawyer before making decisions for your company. We update this page when the rules change.
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