A Startup Founder’s Guide - ISO 27001
What it is:
The leading certifiable global standard for managing information security—centered
on an ISMS (a management system of policies, processes, people, tech, and continual
improvement).
Why it matters:
Opens enterprise doors, shortens security reviews, reduces breach risk, and aligns your org
to a recognized global benchmark (often a fast path to trust alongside or after SOC 2).
What’s new in 2022:
Controls modernized (e.g., threat
intelligence, cloud services, DLP, web
filtering). Annex A restructured into 4
themes with 93 controls (down from 114).
Outcome:
A certificate issued by an accredited
certification body, after Stage 1 & Stage 2
audits, with annual surveillance audits.
ISO 27001 IN PLAIN ENGLISH:
1. Scope
You define the boundaries (products, locations, cloud, teams)
2. ISMS
A living program to identify risks, implement controls, measure effectiveness, and
improve continuously.
3. Core parts of the standard
Clauses 4–10 (requirements for your ISMS: context, leadership, planning, support,
operation, performance evaluation, improvement).
Annex A (a catalog of control objectives/controls to treat risks—select what’s relevant and
justify in your Statement of Applicability).
KEY CONCEPTS YOU’LL USE DAILY
1. Risk-based
You don’t implement controls blindly; you
justify them based on risk.
2. Statement of Applicability (SoA)
Your master table listing which
Annex A controls you adopt or
exclude, with rationale, status, and
links to evidence.
3. Continual improvement
Plan → Do → Check → Act
(PDCA).
4. Documented information
Right-sized, controlled
docs and records
(policies, procedures,
logs, tickets, metrics).
