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ISO/IEC 27001:2022 · Information Security Management System

ISO 27001 proves you protect the data customers trust you with

Procurement teams, regulators and insurers ask for ISO 27001 by name before customer data moves. SIS audits how you assess risk against real assets, choose and justify controls, manage access and encryption, hold suppliers to security terms and handle incidents.

!ISO/IEC 27001 allows organisations to protect valuable digital assets from theft, loss, unauthorised access, and security breaches.
!ISO/IEC 27001 helps organisations comply with data protection and security requirements..
!ISO/IEC 27001 enables cloud computing companies to safeguard users’ data and manage security risks. .
!ISO/IEC 27001 helps organisations meet tender requirements when certification must cover the specific site and service included in the bid.
!The standard provides appropriate tools for Information Technology (IT) companies to detect, handle, and recover from security incidents quickly.
!ISO/IEC 27001 helps organisations show certified security controls and tested backups during cyber insurance renewals

What it is

ISO/IEC 27001 offers a comprehensive set of information security tools for organisations, known as Annex A Controls, to protect users’ data. It protects information through three key pillars: confidentiality, integrity, and availability, ensuring information stays private, accurate, and accessible when needed.

Who issues it

The International Organisation for Standardisation (ISO) and the International Electrotechnical Commission (IEC) jointly published ISO/IEC 27001. However, accredited certification bodies issue certificates after conducting a third-party audit.

Validity

An ISO/IEC 27001 certificate is valid for three years. During this period, certification bodies conduct annual surveillance audits to check compliance with evolving information security requirements. A recertification audit is required after three years

Who can apply for ISO/IEC 22000 Certification?

Organisations across industries can apply for ISO/IEC 27001 certification, including IT, healthcare, banking, finance, education, telecommunications, manufacturing, retail, government, consulting, software, and cloud computing businesses. .

9of 25 industries

Industries that require ISO 22000 Certification

ISO/IEC 27001 is applicable across 9 of the 25 industries SIS covers. The pages below set out the specific reason it comes up in each one.

Defence IndustryTransport and LogisticsMedical DevicesPublic SectorTelecommunication IndustryEducation Industry+3 more

What ISO/IEC 27001 Actually Requires

An organisation must understand the requirements for ISO 22000 certification to implement it effectively.

Scope & interested parties

ISO/IEC 27001 requires organisations to understand internal and external processes, define their scope, and build an effective information security system. .

Policy & leadership

Organisations must set information security objectives based on risk assessments and select appropriate Annex A controls. An organisation also prepares a Statement of Applicability (SoA).

Leadership and Support

ISO/IEC 27001 requires organisations to develop employee competence, provide suitable resources, and establish effective communication.

Operations

Organisations must implement planned security actions and maintain required documented information to control external processes that affect the ISMS.

Operational controls

Organisations must use suitable and repeatable methods to monitor, measure, analyse, and evaluate the ISMS. They must also conduct internal audits and management reviews to assess its effectiveness.

Continuous improvement

ISO/IEC 27001 supports continuous improvement, and organisations regularly review security performance, identify weaknesses, and improve their Information Security Management System (ISMS.

How ISO/IEC 27001 Certification Works

A clear, step-by-step process from your first call to a completed engagement.

Application & Proposal

The first step is defining your certification scope. This covers the included services and sites. It also covers staff with system access, cloud services, outsourced work, and development activities. Confirm any customer contract that must be named.

1–2 days

Gap Review & Readiness

A readiness review finds areas that need attention before the audit. Common issues include risk registers that cover only IT and backup restores that have never been tested after a system change.

1–2 weeks

Stage 1 + Stage 2 Audit

Stage 1 reviews scope, risk method, Statement of Applicability and internal audit records. Stage 2 tests controls in operation: access reviews, logs, joiner and leaver records, restores and incident tickets.

Scheduled around operations

Certificate Issued

The certificate carries a precise scope statement, and that is the part a customer’s vendor portal reads. Annual surveillance goes after access reviews and restore evidence, because those decay fastest.

Valid 3 years

A focused single-site scope is commonly certified in six to ten weeks and multi-site or heavily outsourced scopes take longer, so name the contract date at application and the audit gets scheduled against that rather than against the queue.

Industries That Need ISO/IEC 27001

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Defence Industry

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Why it applies hereDefence work means classified drawings, weapon system code and personnel data sitting on contractor networks. ISO/IEC 27001 provides the access control, cryptography, supplier security and incident response framework required before facility security clearance is granted. Domestically it aligns with national industrial security expectations; for exporters it is the common language buyers use to judge whether a vendor can hold controlled information.Typical trigger: Facility security clearance; export contracts

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Transport and Logistics

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Why it applies hereTransport management systems, EDI links, customs filings and customer shipment data make logistics providers an attractive target and a route into customer networks. ISO/IEC 27001 provides access control, supplier security and incident response, and is now standard in the security questionnaires shippers send before integrating systems.Typical trigger: System integration; shipper questionnaires

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Medical Devices

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Why it applies hereConnected devices, patient data, clinical trial records and proprietary designs put device companies squarely inside information security expectations. ISO/IEC 27001 provides the control framework hospitals and health systems now demand before procurement, and supports the cybersecurity documentation regulators require for software-enabled devices.Typical trigger: Hospital procurement; device cybersecurity

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Public Sector

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Why it applies hereGovernment systems hold citizen identity, revenue, health and law enforcement data and are a standing target for state and criminal actors. ISO/IEC 27001 provides the certified control framework for access, cryptography, supplier security and incident response, and is increasingly written into e-governance programme requirements and empanelment criteria for departments and their vendors.Typical trigger: E-governance requirements; empanelment

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Telecommunication Industry

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Why it applies hereOperators sit on subscriber identity, call records, location data and interception infrastructure, making them critical national infrastructure and a priority target. ISO/IEC 27001 provides the certified control framework regulators and enterprise customers require, covering access, network security, supplier risk and incident response.Typical trigger: Regulatory obligation; enterprise customers

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Education Industry

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Why it applies hereInstitutions hold student records, assessment data, health information and research output, and are increasingly targeted by ransomware. ISO/IEC 27001 provides access control, backup, supplier security and incident response, and is often required for research collaborations and government-funded programmes.Typical trigger: Ransomware exposure; research collaborations

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Information Technology Industry

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Why it applies hereInformation security is the single most requested certification in technology procurement. ISO/IEC 27001 provides the certified framework for access control, secure development, supplier risk, cryptography and incident response, and is typically the minimum required to enter enterprise vendor lists or handle customer data under contract.Typical trigger: Enterprise vendor onboarding

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Banking and Finance

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Why it applies hereFinancial institutions are the most targeted sector for cyber attack and operate under explicit regulatory security expectations. ISO/IEC 27001 provides the certified framework for access control, cryptography, third-party risk and incident response, and is commonly required of both institutions and their technology vendors during onboarding.Typical trigger: Regulatory expectation; vendor onboarding

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Hotel, Restaurant and Leisure Service

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Why it applies hereBooking systems, point of sale, loyalty databases and WiFi networks hold guest and payment data across distributed sites with limited local IT support. ISO/IEC 27001 provides access control, supplier security and incident response, and is increasingly requested by corporate clients and franchisors.Typical trigger: Distributed site security; franchisor requirements

Commonly taken alongside

ISO/IEC 27701Privacy Information Management ISO 22301Business Continuity Management ISO/IEC 20000-1IT Service Management SOC 2 Type 2Service Organization Control attestation

Security, privacy, continuity and service management draw on the same asset register, supplier list and incident process, so certifying them together lets SIS run one set of interviews across the common clauses and typically removes two to three audit days from the total.

Not Sure Which Certification You Need?

Three questions. The selector reads the same industry-to-standard mapping this whole site is built on, then shortlists what applies to you.

Question 1 of 3

Which sector best describes your organisation?

Scope wording decides what the audit costs

We will not quote ISO/IEC 27001 from a web form. The scope sentence changes the audit days more than headcount does, and it takes a call to get that sentence right.

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What ISO/IEC 27001 Changes for Your Business

More than a certificate — a testimony that you have raised the bar and built customer confidence.

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Vendor Onboarding

An accredited certificate can make enterprise security reviews easier. It can reduce lengthy questionnaire exchanges before a contract is signed.

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Fewer Right-to-Audit Requests

One audited system can meet the security needs of several customers. Customers may make fewer audit requests when your certificate covers the required service.

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Better Access Control

Your business can control access when employees join or leave. Regular access reviews can also remove old accounts and unnecessary admin rights.

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Tested Backup Recovery

Regular backup checks show whether your data can be restored. Your team can then rely on tested recovery plans during an incident.

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Stronger Supplier Security

Your supplier contracts can include clear security requirements. This helps your business manage subcontractors and reduce supplier-related risks.

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Wider Market Recognition

An IAF-member accredited certificate can help your business meet buyer and tender requirements in other countries. It can also reduce the need for duplicate security assessments.

Frequently Asked Questions

Straight answers to what buyers ask before they commit to ISO/IEC 27001.

What is the difference between ISO/IEC 27001 and SOC 2?

ISO/IEC 27001 is a certification issued by an accredited certification body against a published standard, valid three years with annual surveillance. SOC 2 is an attestation report issued by a CPA firm against trust services criteria, covering a point in time for Type 1 or a period for Type 2, and it is reissued annually. Many US buyers ask for SOC 2; most other markets ask for 27001.

Do we have to apply all 93 Annex A controls?

No. You apply the controls that treat your identified risks, and record in the Statement of Applicability which ones apply, which do not, and why. Exclusions must be justified against the risk assessment, not convenience. An auditor will challenge an exclusion such as secure development if you write software, however it is worded.

Does the scope have to cover the whole company?

No, but the scope statement must be honest and precise, because customers read it. Certifying one service line or one site is legitimate and common. What causes problems is a narrow certified scope presented to buyers as if it covered the whole organisation, which is exactly what a careful vendor review checks.

We use cloud providers for everything. What is left for us to control?

Plenty. The provider secures its infrastructure; you remain responsible for configuration, identity and access, key management, logging, data classification, backup arrangements, and the contract terms you accepted. Auditors look closely at cloud administrative access, tenancy configuration and whether anyone reviews the provider’s own assurance reports rather than filing them.

How long does certification take from a standing start?

For a defined single-site scope with reasonable IT hygiene already in place, six to ten weeks is realistic, including gap review, implementation and both audit stages. The internal audit and one management review must have happened before Stage 2, and that sequencing, not the audit itself, is what usually sets the earliest possible date.

What happens if the auditor raises a major non-conformity?

The certificate is not issued until it is closed. You submit a root cause analysis, a correction and a corrective action, with evidence. Depending on severity, SIS verifies this remotely or with a short follow-up visit. A major finding is normally something systemic, such as no risk treatment plan or an internal audit programme that has never run.

Start ISO/IEC 27001 certification with an accredited body

Our auditors test controls rather than read policies. What you end up with is a scope statement precise enough to survive a customer’s vendor review without a follow-up call.

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