Vulnerability assessment and pentesting are often confused. Here's how they differ, why you need both, and how CERT-In sees them.
Definitions
Vulnerability Assessment (VA) is broad coverage — automated scanning for known weaknesses across your assets.
Penetration Testing (PT) is deep exploitation — manual attempts to chain weaknesses into real business impact.
VAPT combines both, which is why most regulators (and our customers) ask for it as a single deliverable.
Approach & tooling
VA leans on scanners — Nessus, Qualys, Nuclei — to enumerate misconfigurations and known CVEs.
PT leans on humans — senior pentesters using Burp, custom tooling and offensive tradecraft to find logic flaws scanners miss.
Outcome differences
A VA gives you a long list of weaknesses. A PT gives you a short list of confirmed, exploitable, prioritised attack paths.
Together, they give security teams both breadth and depth — which is what mature programs need.
Regulatory view
CERT-In, RBI, SEBI and IRDAI all use the term VAPT explicitly. PCI-DSS distinguishes them: Requirement 11.3 mandates VA and 11.4 mandates PT.
Whichever framework applies, expect auditors to ask for both — and for the methodology and consultants to be CREST or CERT-In aligned.