Security Researcher Interview Questions UK: 8 Real Questions and What Interviewers Want

Applying for a Security Researcher job in the UK? Here is what you are likely to be asked. These questions come from our Security Researcher question bank of 12 questions, written for UK employers at senior level.

Eight Security Researcher interview questions, and what the interviewer is thinking

1. What does responsible vulnerability disclosure involve, and how would you handle it for a vendor that is unresponsive?

Why they ask: To test understanding of ethical and legal practice in security research.

2. How do you assess the severity of a vulnerability you have found, beyond the CVSS score?

Why they ask: To check you can reason about real-world risk.

3. How would you write a high-quality vulnerability report for a vendor?

Why they ask: To test communication skills essential for researchers.

4. What is a CVE, and how does the CVE and CWE system relate to the way vendors and defenders prioritise issues?

Why they ask: To check knowledge of the vulnerability ecosystem.

5. What approaches do you use to find vulnerabilities in software, and how do you decide where to focus effort?

Why they ask: To test research methodology at senior level.

6. You discover a serious vulnerability in a widely used product while working on an unrelated task. What do you do?

Why they ask: To test judgement about handling unexpected discoveries.

7. Tell me about a vulnerability you found and how you took it from discovery to fix.

Why they ask: To test end-to-end research and coordination experience.

8. Why did you choose security research, and how do you keep your skills current?

Why they ask: To understand motivation and learning habits for a rapidly changing field.

A sample answer to question 1

What does responsible vulnerability disclosure involve, and how would you handle it for a vendor that is unresponsive?

Responsible disclosure means reporting a vulnerability to the affected party privately, giving them reasonable time to fix it before any public detail is released, so users are protected. I would first look for the vendor's security.txt file or vulnerability disclosure policy, use the stated contact and send a clear, concise report with affected versions, impact and enough information to reproduce, avoiding any exposure of customer data. If there is no response, I would try other routes: the NCSC's vulnerability reporting service, which can help coordinate with vendors in the UK, or a coordinating CERT such as CERT/CC, and ask for a CVE through the CNA process. A common timeline is 90 days, extended if the vendor is making good progress. If the issue is serious and still unresolved, I would consider limited disclosure that helps defenders without giving a ready exploit. I would also take care with the law, since research beyond what is authorised can breach the Computer Misuse Act, and seek advice where uncertain.

Common mistake to avoid: Publishing details immediately out of frustration; accessing data beyond what proves the issue

Want the rest?

Full model answers, key points and common mistakes for all 12 questions are on the Security Researcher interview questions page. The first five are free, no sign-up needed.