7 Layers of Cybersecurity
by Mark Hayward — UK Cyber Security Expert, Armed Forces Veteran, 144+ Books
Most people are familiar with the OSI 7-layer model for network communications. But what are the 7 layers of security that every organisation must address? Mark Hayward answers that question in this practical, structured guide — mapping out the complete defence-in-depth model from physical security and network perimeter to endpoint protection, identity and access management, application security, cloud controls, and the most unpredictable layer of all: people. A framework-agnostic guide that applies whether you're working in a startup or an enterprise.
What You'll Learn
- Physical security layer
- Network perimeter defence
- Endpoint protection
- Identity and access management
- Application security
- Cloud security controls
- Human layer and security culture
About the Author
Mark Hayward
UK Cyber Security Expert · 23+ Years Experience · UK Armed Forces Veteran
Mark Hayward is a prolific cyber security author with 144+ published books covering the full spectrum of digital security. A UK Armed Forces veteran, he brings real-world operational experience to every title — making complex security concepts accessible to professionals at every level.
Learn more about Mark →"Comprehensive, practical, and clearly written. Essential reading for anyone serious about cyber security."
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