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Zero Trust - Modern Security Architecture Principle

Zero Trust is a security paradigm based on the principle of "never trust, always verify": No user, device, or network segment is implicitly trusted—every access request is explicitly verified.

Summary: Zero Trust replaces the outdated perimeter model (“trusted inside, untrusted outside”) with continuous verification: identity (who?), device (health status?), context (location, time, behavior). Core principles: Verify Explicitly, Least Privilege Access, Assume Breach. NIST SP 800-207, Microsoft Zero Trust, Google BeyondCorp. Technical components: Identity Provider (Azure AD/Okta), MDM/EDR for Device Trust, Microsegmentation, CASB, SASE.

Sources & References

  1. [1] NIST SP 800-207 - Zero Trust Architecture - National Institute of Standards and Technology
  2. [2] Forrester Research - The Definition of Modern Zero Trust - Forrester Research
  3. [3] BSI - Zero Trust Architekturen - Bundesamt für Sicherheit in der Informationstechnik

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About the Author

Jan Hörnemann
Jan Hörnemann

Chief Operating Officer · Prokurist

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M.Sc. Internet-Sicherheit (if(is), Westfälische Hochschule). COO und Prokurist mit Expertise in Informationssicherheitsberatung und Security Awareness. Nachwuchsprofessor für Cyber Security an der FOM Hochschule, CISO-Referent bei der isits AG und Promovend am Graduierteninstitut NRW.

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ISO 27001 Lead Auditor (PECB/TÜV) T.I.S.P. (TeleTrusT) ITIL 4 (PeopleCert) BSI IT-Grundschutz-Praktiker (DGI) Ext. ISB (TÜV) BSI CyberRisikoCheck CEH (EC-Council)
This article was last edited on 03/29/2026. Responsible: Jan Hörnemann, Chief Operating Officer · Prokurist at AWARE7 GmbH. License: CC BY 4.0 - free use with attribution: "AWARE7 GmbH, https://a7.de"