Incident Response Analyst Interview Questions UK: 8 Real Questions and What Interviewers Want

Most Incident Response Analyst interviews in the UK follow a pattern, and knowing it beats guessing. Below are eight questions from our bank of 16, each with a note on what the interviewer is really after.

Eight Incident Response Analyst interview questions, and what the interviewer is thinking

1. How do you triage and scope an incident once an alert has been confirmed as a true positive?

Why they ask: Scoping quickly and accurately is the central skill of an incident responder.

2. What are the main containment options for a compromised endpoint, user account and server, and what are the trade-offs?

Why they ask: They want to see practical containment decisions beyond textbook phases.

3. What would you look for to detect and investigate a business email compromise in Microsoft 365?

Why they ask: BEC is one of the most common cases for UK incident responders.

4. What does an Incident Response Analyst do day to day, outside of a major incident?

Why they ask: They check that you understand the proactive part of the role.

5. Which Windows event IDs and artefacts do you rely on to spot lateral movement?

Why they ask: Knowledge of core telemetry is essential in live response.

6. How does a typical ransomware attack unfold, and where would you aim to detect and break the chain?

Why they ask: Responders must understand attacker behaviour to anticipate the next step.

7. An EDR alert shows credential dumping from LSASS on a domain-joined file server. What are your first steps?

Why they ask: A high-severity scenario requiring structured prioritisation.

8. Tell me about a time you led or contributed to the investigation of a security incident from detection to closure.

Why they ask: They want a concrete example demonstrating the full lifecycle.

A sample answer to question 1

How do you triage and scope an incident once an alert has been confirmed as a true positive?

I'd start by establishing what we know: affected host or account, time of first malicious activity and the likely initial access route. I'd assign a severity based on data sensitivity, business criticality and spread, and open an incident record with a timeline. For scoping I pivot from the initial indicator, searching the EDR and SIEM for the same hashes, domains, IPs, command lines and parent-child process patterns across the estate, then reviewing authentication logs for the affected account to detect lateral movement. I'd look for persistence mechanisms such as scheduled tasks, services, run keys and new accounts. I'm careful to separate confirmed facts from assumptions in my notes. As scope firms up, I'd brief the incident manager on impact and recommend containment, balancing speed against the risk of alerting the attacker, for example by collecting evidence from several hosts before isolating them together. I'd keep updating the scope as new indicators emerge.

Common mistake to avoid: Isolating before understanding; No written timeline

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the Incident Response Analyst interview questions page. The first five are free, no sign-up needed.