ISO 27001 Compliance: A Practical Checklist for Mid-Market Enterprises

ISO 27001 certification has become table stakes for mid-market companies working with enterprise clients or handling sensitive data. But for many organizations, the path to certification feels overwhelming. Based on our experience helping 50+ companies achieve certification, here's a practical, no-nonsense checklist.

Phase 1: Gap Analysis (Weeks 1-2)

Start by understanding where you stand. Map your current security controls against the ISO 27001 Annex A requirements. Identify what you already have in place, what needs enhancement, and what's completely missing. This assessment typically reveals that most mid-market companies already have 40-50% of controls in place informally.

Phase 2: ISMS Foundation (Weeks 3-6)

Build your Information Security Management System documentation: ISMS scope and boundaries, Information security policy, Risk assessment methodology, Statement of Applicability, and Risk treatment plan. These documents form the backbone of your certification. Get them right, and everything else follows.