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Håkan FägnellAug 31, 2026 • 10 min read
SPF, DKIM & DMARC Rollout Guide: Zero to p=reject Step by Step
A 6–10 week, step-by-step enforcement plan for IT managers: inventory every sender, publish correct ...
#deepguide#email#dmarc#spf
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Håkan FägnellAug 30, 2026 • 11 min read
HTTP Security Headers Hardening Guide: HSTS, CSP & More Step by Step
From an F grade to a hardened A: deploy HSTS, nosniff, frame protection and Permissions-Policy immed...
#deepguide#headers#csp#hsts
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Håkan FägnellAug 29, 2026 • 10 min read
Website Incident Response Playbook: NIST-Based Plan for Small IT Teams
A complete NIST-based incident response plan sized for small IT teams: severity levels, contact card...
#deepguide#incidentresponse#gdpr#nis2
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