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NextLayerSec

Matthew Levorson

Security Engineer — Blue Team · Email Security · Microsoft 365 Hardening

nextlayersec.io  ·  LinkedIn


About

Independent security consultant. Email authentication, identity hardening, and Microsoft 365 defense for small and mid-market organizations. Production-validated controls aligned to NIST SP 800-53 and CIS Controls v8.

Selected Work

M365 Assessment Framework

Multi-tenant security assessment producing client-ready reports mapped to NIST and CIS.

Email Security Framework

End-to-end SPF, DKIM, DMARC, MTA-STS, and DNSSEC deployment for Microsoft 365 tenants.

Compliance-Mapped Assessment

Read-only Microsoft 365 audit mapped to NIST SP 800-53, CIS v8.1, and HIPAA.

Blue Team Playbooks

Detection workflows, threat intelligence documentation, purple team lab guidance.

Principles

  • Assume compromise; design for survivability.
  • Production-validated controls over lab posture.
  • Documentation is part of the control.

Frameworks

NIST CSF 2.0 · NIST SP 800-53 · MITRE ATT&CK · CIS Controls v8 · ISO/IEC 27001 · RFC 8461 · RFC 7489

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