ISO 27001 ISMS Overview

Property	Value
Document ID	FW-002
Version	1.0
Status	Draft
Owner	Chief Information Security Officer (CISO)
Last Updated	2026-01-11
Next Review	2027-01-11
Related Controls	ISO 27001:2022

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1. Purpose

This document provides an overview of our Information Security Management System (ISMS) aligned with ISO 27001:2022 requirements. It describes the scope, context, and structure of our ISMS.

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2. ISMS Scope Statement

2.1 Scope Definition

The ISMS applies to:

Organization: [Company Name]

Services:

• [Primary product/service]
• [Supporting services]

Locations:

• [Primary office location]
• Remote work environments
• Cloud infrastructure (AWS, GCP)

Departments:

• All departments
• All employees, contractors, and third-party users

Systems:

• Production infrastructure
• Development environments
• Corporate IT systems
• Cloud services (IaaS, PaaS, SaaS)

2.2 Scope Boundaries

In Scope:

• Customer data processing and storage
• Application development and deployment
• IT infrastructure management
• Employee endpoint devices
• Third-party integrations

Out of Scope:

• Customer-owned infrastructure
• Customer end-user devices
• Third-party systems not processing our data

2.3 Scope Diagram

┌────────────────────────────────────────────────────────────────────┐
│                          ISMS SCOPE                                 │
│  ┌─────────────────────────────────────────────────────────────┐   │
│  │                 Cloud Infrastructure                         │   │
│  │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐          │   │
│  │  │   AWS/GCP   │  │   Databases │  │  App Servers │          │   │
│  │  └─────────────┘  └─────────────┘  └─────────────┘          │   │
│  └─────────────────────────────────────────────────────────────┘   │
│                                                                     │
│  ┌─────────────────────────────────────────────────────────────┐   │
│  │                 Corporate Systems                            │   │
│  │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐          │   │
│  │  │  Google WS  │  │    Slack    │  │   GitHub    │          │   │
│  │  └─────────────┘  └─────────────┘  └─────────────┘          │   │
│  └─────────────────────────────────────────────────────────────┘   │
│                                                                     │
│  ┌─────────────────────────────────────────────────────────────┐   │
│  │                    Personnel                                 │   │
│  │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐          │   │
│  │  │  Employees  │  │ Contractors │  │   Vendors   │          │   │
│  │  └─────────────┘  └─────────────┘  └─────────────┘          │   │
│  └─────────────────────────────────────────────────────────────┘   │
└────────────────────────────────────────────────────────────────────┘

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3. Context of the Organization

3.1 External Context

Factor	Description	Impact on ISMS
Regulatory	GDPR, industry regulations	Data protection controls required
Market	Customer security expectations	SOC 2/ISO certification needed
Competitive	Industry security standards	Must meet or exceed peers
Technology	Evolving threat landscape	Continuous control updates
Economic	Resource constraints	Risk-based prioritization

3.2 Internal Context

Factor	Description	Impact on ISMS
Culture	Security-conscious environment	Supports security initiatives
Resources	Limited security team	Automation and prioritization
Technology	Cloud-first, modern stack	Cloud security focus
Structure	Flat organization	Clear security responsibilities
Strategy	Growth focused	Scalable security controls

3.3 Interested Parties

Stakeholder	Requirements	How Addressed
Customers	Data protection, compliance	Security controls, certifications
Employees	Clear guidance, training	Policies, awareness program
Regulators	Legal compliance	Compliance program
Investors	Risk management	Security governance
Partners	Secure integration	Third-party security program
Auditors	Evidence, documentation	ISMS documentation

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4. ISMS Leadership and Governance

4.1 Security Governance Structure

┌─────────────────────────────┐
│      Executive Team         │
│    (Ultimate Accountability)│
└─────────────┬───────────────┘
              │
┌─────────────▼───────────────┐
│  Security Steering Committee│
│    (Strategic Direction)    │
└─────────────┬───────────────┘
              │
┌─────────────▼───────────────┐
│           CISO              │
│   (ISMS Owner & Management) │
└─────────────┬───────────────┘
              │
    ┌─────────┴─────────┐
    │                   │
┌───▼───┐         ┌─────▼─────┐
│Security│         │    IT     │
│  Team  │         │Operations │
└────────┘         └───────────┘

4.2 ISMS Roles and Responsibilities

Role	Responsibilities
Executive Management	ISMS accountability, resource allocation, management review
CISO	ISMS ownership, policy development, compliance oversight
Security Team	Control implementation, monitoring, incident response
IT Operations	Technical control implementation
HR	Personnel security, training
Legal	Regulatory compliance, contracts
All Employees	Policy compliance, incident reporting

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5. ISO 27001 Mandatory Documentation

5.1 Required Documents

Clause	Document	Status	Location
4.3	ISMS Scope	✅	This document (Section 2)
5.2	Information Security Policy	✅	POL-001
6.1.2	Risk Assessment Process	✅	RISK-001
6.1.3	Risk Treatment Process	✅	RISK-002
6.1.3	Statement of Applicability	✅	RISK-003
6.2	Security Objectives	✅	This document (Section 6)
7.2	Competence Records	✅	Training records
8.1	Operational Planning	✅	Procedures (02-procedures)
8.2	Risk Assessment Results	✅	Risk register
8.3	Risk Treatment Results	✅	Treatment plans
9.1	Monitoring Results	✅	Security metrics
9.2	Internal Audit Results	⏳	Audit reports
9.3	Management Review Results	⏳	Review minutes
10.1	Nonconformity and Corrective Action	✅	Finding tracker

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6. Information Security Objectives

6.1 Strategic Objectives

#	Objective	Target	Measure
1	Achieve SOC 2 Type II certification	Q1 2027	Certification obtained
2	Achieve ISO 27001 certification	Q3 2027	Certification obtained
3	Maintain zero critical security incidents	0 per year	Incident count
4	Complete security awareness training	100% annually	Completion rate
5	Remediate critical vulnerabilities within SLA	<7 days	Mean time to remediate

6.2 Operational Objectives

#	Objective	Target	Measure
1	Complete quarterly access reviews	100%	Review completion
2	Achieve MFA enrollment	100%	Enrollment rate
3	Complete annual risk assessment	Annually	Assessment completion
4	Pass penetration test without critical findings	0 critical	Finding count
5	Complete DR test successfully	Annually	Test success

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7. Risk Management

7.1 Risk Assessment Approach

1. Asset Identification: Identify information assets
2. Threat Identification: Identify potential threats
3. Vulnerability Assessment: Identify weaknesses
4. Impact Assessment: Determine potential impact
5. Likelihood Assessment: Determine probability
6. Risk Calculation: Impact × Likelihood
7. Risk Treatment: Mitigate, transfer, accept, or avoid

7.2 Risk Acceptance Criteria

Risk Level	Acceptance Authority	Action Required
Critical (16-25)	CEO	Immediate treatment or accept with full justification
High (10-15)	CISO	Treatment plan required
Medium (5-9)	Security Lead	Treatment within 90 days
Low (1-4)	Control Owner	Monitor and accept

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8. ISMS Processes

8.1 Plan-Do-Check-Act Cycle

        ┌───────────────┐
        │     PLAN      │
        │ Establish ISMS│
        │  objectives   │
        └───────┬───────┘
                │
    ┌───────────▼───────────┐
    │         DO            │
    │ Implement and operate │
    │       controls        │
    └───────────┬───────────┘
                │
        ┌───────▼───────┐
        │     CHECK     │
        │Monitor, review│
        │    audit      │
        └───────┬───────┘
                │
    ┌───────────▼───────────┐
    │         ACT           │
    │ Maintain and improve  │
    │        ISMS           │
    └───────────────────────┘

8.2 Key ISMS Processes

Process	Description	Frequency
Risk Assessment	Identify and assess risks	Annually + triggered
Internal Audit	Evaluate ISMS effectiveness	Annually
Management Review	Executive oversight	Bi-annually
Security Monitoring	Continuous security observation	Continuous
Incident Management	Handle security incidents	As needed
Corrective Action	Address nonconformities	As needed
Document Control	Maintain ISMS documentation	Continuous

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9. Certification Roadmap

9.1 ISO 27001 Certification Path

Phase	Activity	Timeline
Gap Analysis	Assess current state vs requirements	Q2 2026
Remediation	Address identified gaps	Q2-Q3 2026
Documentation	Complete ISMS documentation	Q3 2026
Implementation	Implement all controls	Q3-Q4 2026
Internal Audit	Conduct internal audit	Q4 2026
Management Review	Executive review and approval	Q1 2027
Stage 1 Audit	Documentation review	Q2 2027
Stage 2 Audit	Implementation verification	Q3 2027
Certification	Certificate issued	Q3 2027
Surveillance	Annual surveillance audits	Ongoing

9.2 Audit Cycle

Year	Audit Type	Scope
1	Certification (Stage 1 + 2)	Full ISMS
2	Surveillance 1	Subset of controls
3	Surveillance 2	Subset of controls
4	Re-certification	Full ISMS

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10. Continuous Improvement

10.1 Improvement Sources

• Internal audit findings
• External audit findings
• Incident post-mortems
• Risk assessment updates
• Management review decisions
• Employee suggestions
• Industry best practices

10.2 Improvement Process

1. Identify improvement opportunity
2. Assess impact and resources
3. Plan implementation
4. Execute changes
5. Verify effectiveness
6. Update documentation
7. Communicate changes

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11. Related Documents

• Information Security Policy (POL-001)
• Statement of Applicability (RISK-003)
• Risk Assessment Template (RISK-001)
• SOC 2 Controls Overview (FW-001)
• Internal Audit Schedule (FW-003)

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12. Version History

Version	Date	Author	Changes
1.0	2026-01-11	Security Team	Initial release

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13. Approval

Role	Name	Signature	Date
CISO	_________________	_________________	________
CEO	_________________	_________________	________

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