Question 1

What is the difference between penetration testing and vulnerability scanning?

Accepted Answer

Vulnerability scanning uses automated tools to identify known weaknesses at scale, while penetration testing is a manual, expert-led exercise that actively exploits weaknesses to prove real-world impact. Scanning provides breadth and continuity; penetration testing provides depth and assurance.

Question 2

Do I need both a vulnerability scan and a penetration test?

Accepted Answer

Most mature security programmes use both. Scanning maintains ongoing hygiene and broad visibility across the estate, while periodic penetration testing validates the most critical systems and uncovers issues automated tools cannot find, such as business-logic flaws.

Question 3

How often should each be performed?

Accepted Answer

Vulnerability scans are typically run continuously or on a weekly to monthly schedule, whereas penetration tests are usually conducted annually, after major changes, or as required by a standard or regulator.

Question 4

Is a vulnerability scan enough for compliance?

Accepted Answer

It depends on the standard. Some frameworks accept regular scanning for certain controls, but many — and most high-assurance requirements — call for independent, manual penetration testing. We can advise on what your specific obligations require.

Question 5

Why does penetration testing cost more?

Accepted Answer

Penetration testing involves skilled human effort to manually probe systems, validate findings and chain attacks together, which removes false positives and reveals deeper risks. That expert time makes it more costly per engagement than automated scanning, but it delivers far greater assurance.

Pen Testing vs Vulnerability Scanning