Mapped every skill to NIST CSF 2.0 subcategory IDs (GV/ID/PR/DE/RS/RC functions)
based on subdomain and content analysis. Restores 11 skills corrupted during
prior rebase, re-enriching with ATLAS, D3FEND, NIST AI RMF, and CSF 2.0 fields.
All 754 skills now carry structured mappings for all 5 security frameworks:
- MITRE ATT&CK (in tags)
- MITRE ATLAS v5.5 (atlas_techniques)
- MITRE D3FEND v1.3 (d3fend_techniques)
- NIST AI RMF 1.0 (nist_ai_rmf)
- NIST CSF 2.0 (nist_csf)
Execute a phased DMARC rollout from p=none monitoring through p=quarantine to p=reject enforcement, ensuring all legitimate email sources are authenticated before blocking unauthorized senders.
cybersecurity
phishing-defense
dmarc
spf
dkim
email-authentication
anti-spoofing
phishing
dns
email-security
1.0
mahipal
Apache-2.0
PR.AT-01
DE.CM-09
RS.CO-02
DE.AE-02
Performing DMARC Policy Enforcement Rollout
Overview
Domain-based Message Authentication, Reporting and Conformance (DMARC) is the cornerstone of email anti-spoofing protection. A DMARC rollout progresses through three phases: monitoring (p=none), quarantine (p=quarantine), and full enforcement (p=reject). When configured at p=reject, any email that fails both SPF and DKIM checks is outright rejected. Google and Yahoo now require DMARC for bulk senders (5,000+ emails), driving a 65% reduction in unauthenticated messages. The rollout typically takes 3-6 months for safe deployment.
When to Use
When conducting security assessments that involve performing dmarc policy enforcement rollout
When following incident response procedures for related security events
When performing scheduled security testing or auditing activities
When validating security controls through hands-on testing
Prerequisites
Administrative access to DNS management for the domain
Understanding of SPF, DKIM, and DMARC protocols (RFC 7208, 6376, 7489)
Complete inventory of all legitimate email sending sources
DMARC reporting analysis tool (EasyDMARC, DMARCLY, Valimail, or dmarcian)
mukul975
efca3ec611