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CIS Critical Security Controls: Implementation Groups & Cyber Defense

Operationalizing Implementation Groups (IG1, IG2, IG3) across inventory, access, and continuous vulnerability management.

Executive Overview

The Center for Internet Security (CIS) Critical Security Controls provide an actionable, prioritized roadmap for securing enterprise networks, endpoints, and cloud environments against current real-world cyber attack vectors.

1. CIS Implementation Groups (IG1, IG2, IG3)

CIS Controls Version 8 categorizes 153 safeguards into three Implementation Groups:

  • IG1 (Essential Cyber Hygiene): 56 basic safeguards that every organization must implement to defend against widespread, untargeted attacks (MFA, asset inventory, automated backups).
  • IG2 (Enterprise Defense): 74 additional safeguards for organizations handling sensitive client and financial data (network segmentation, vulnerability management).
  • IG3 (Specialized / Critical): All 153 safeguards designed for high-value targets facing targeted advanced persistent threats (APTs).

Frequently Asked Questions

Why is asset inventory (Control 1 and 2) the very first step in CIS Controls?

You cannot protect what you do not know exists; uninventoried servers, shadow cloud accounts, and rogue IoT devices represent the primary ingress vectors for ransomware and breaches.

AI Summary

The Center for Internet Security (CIS) Critical Security Controls provide an actionable, prioritized roadmap for securing enterprise networks, endpoints, and cloud environments against current real-world cyber attack vectors.