Zero Trust

A clear explainer on defense in depth: what it means, where the idea comes from, the layers of control (perimeter, network, endpoint, application, data, identity, physical and people), why no single control is ever enough, how it maps to zero trust and the NIST Cybersecurity Framework, and a worked example of layers catching what others miss.

A beginner-friendly guide to network security fundamentals: segmentation, firewalls, zero trust, monitoring, and the common controls that protect a modern network.

When you give an LLM the ability to call tools and take actions, you grant it real capability. The controls that keep LLM tool access safe: least privilege, human approval, sandboxing and logging.

FIDO2 and passkeys give the workforce phishing-resistant sign-in that is also faster and easier than passwords. The security, productivity and cost benefits, and how to realise them.

CISA’s Zero Trust Maturity Model maps the journey across five pillars and four stages. What each pillar and stage means, and how to assess where you sit.

The Model Context Protocol lets AI agents call external tools and data through MCP servers. The governance controls that prevent an over-privileged or malicious MCP server becoming your next incident.

NIS2 doesn't name FIDO2, but Article 21 requires MFA where appropriate, and FIDO2 passkeys and security keys meet its phishing-resistant end. Rollout order.

Passkeys and FIDO2 hardware security keys are both WebAuthn credentials, but they differ in portability, assurance and where they belong. A clear comparison and when to use each.

A reference architecture for the three unsolved problems of deploying AI agents at scale: identity (zero standing privilege), security (runtime guardrails plus a quarantine path), and observability (trace-first debugging). Nine components, explained — plus an interactive tool to self-score your own environment.

A practical guide to phishing-resistant authentication: what FIDO2 and passkeys are, the difference between security keys and device-bound passkeys, and how to assess readiness before you roll them out.