Onyx Blog

Insights on security and compliance

Practical, no-nonsense guidance on PCI, ISO 27001, GDPR, penetration testing, and building an audit-ready security posture.

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Guides

Penetration Testing vs Vulnerability Scanning: What's the Difference?

Penetration testing vs vulnerability scanning: a scan is automated breadth, a pen test is manual depth. When you need each, the cost, and what PCI/SOC 2 require.

Atika Arif · May 2, 2026

Guides

What Is a Penetration Test? A Buyer's Guide

A penetration test is an authorised, simulated cyberattack that proves what a real attacker could reach. How it works, the types, and what you should receive.

Atika Arif · May 1, 2026