Module 6 · Security Maturity Models — NIST CSF, ISO 27001, SAMM, CIS in Practice

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 13, 2026
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Why this module exists. Security maturity models — CMMI for Security, NIST CSF tiers, ISO 27001 control coverage, SAMM, BSIMM — are how organisations measure where they are versus where they should be. Used well, a maturity model is the operational scaffolding for a multi-year improvement plan. Used poorly, it becomes a heatmap that decorates board decks and changes nothing. This module is the practitioner-level guide to picking, applying, and not abusing maturity models.

Why this module exists. Every Indian enterprise we audit has a “maturity assessment” somewhere on file. Few have one that has been refreshed in the last 18 months; fewer still use it to drive funding decisions. The pattern is the same: a one-time scoring exercise that produced a slide, the slide got presented to the board, and then nothing operational changed. This module covers how to make the model actually drive the programme.

The four models that matter for an Indian enterprise

Model Scope When to use
NIST CSF 2.0 Whole-of-organisation cyber programme Annual board-level baseline. Default choice for enterprise CISO.
ISO 27001:2022 + Annex A controls Information security management system When you need a certifiable management system.
SAMM (OWASP) Software security in product engineering Product-led companies; AppSec function maturity.
CIS Critical Security Controls (v8.1) Technical control implementation Mid-market organisations needing a prioritised technical baseline.

Pick one as your headline framework — the one the board sees, the one the budget is built around. Use the others as reference for specific functions. Running multiple in parallel and reporting separately on each is how the maturity work becomes overhead.

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