Individual skill

implementing-anti-ransomware-group-policy

Configures Windows Group Policy Objects to block ransomware execution and lateral spread, covering AppLocker rules, Software Restriction Policies, Controlled Folder Access, attack surface reduction rules, and network protection settings. Use when hardening Windows endpoints against ransomware via GPO, configuring AppLocker or Controlled Folder Access, or building endpoint protection policies through Group Policy.

skills/implementing-anti-ransomware-group-policy/SKILL.md

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Last checked: Nov 9, 2026

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Repository stars (not skill ratings): 35,881
Repository last updated: Aug 31, 2026
License: Apache-2.0

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ai-agents Repository topic
claude-code Repository topic
cybersecurity Repository topic
incident-response Repository topic
mitre-attack Repository topic
penetration-testing Repository topic
red-team Repository topic
security Repository topic
cloud-security Repository topic
malware-analysis Repository topic
ransomware Declared skill tag
group-policy Declared skill tag
windows Declared skill tag
applocker Declared skill tag
hardening Declared skill tag
prevention Declared skill tag
engineering Derived category

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# Implementing Anti-Ransomware Group Policy

## When to Use

- Hardening a Windows Active Directory environment against ransomware execution and propagation
- Implementing defense-in-depth by blocking ransomware execution paths via Group Policy
- Configuring AppLocker or WDAC rules to prevent unauthorized executables from running in user-writable directories
- Enabling Controlled Folder Access to protect critical directories from unauthorized file modifications
- Restricting lateral movement vectors (RDP, SMB, WMI) that ransomware uses to spread across the domain

**Do not use** as a standalone ransomware defense. GPO settings complement but do not replace endpoint detection, backups, network segmentation, and user awareness training.

## Prerequisites