Junior Cyber Security Analyst Interview Questions UK: 8 Real Questions and What Interviewers Want

Most Junior Cyber Security 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 Junior Cyber Security Analyst interview questions, and what the interviewer is thinking

1. Take me through how you would handle a security alert from the moment it appears in the queue to closing the ticket.

Why they ask: To test whether you follow a disciplined triage workflow at Tier 1.

2. What do true positive, false positive, true negative and false negative mean for an analyst, and which is most worrying?

Why they ask: To check you understand detection quality, which shapes daily triage decisions.

3. A user says their computer is running slowly and showing pop-ups. How would you investigate using the tools you'd expect to have?

Why they ask: To test endpoint triage skills in a common user-reported scenario.

4. How can DNS logs help you detect malicious activity, and what would you look for?

Why they ask: To check you understand a data source that is rich in security signals.

5. How could malware persist on a Windows machine after a reboot, and how would you check for it?

Why they ask: To test knowledge of attacker persistence, which analysts need when scoping infections.

6. A user reports that their company laptop was stolen from their car overnight. What actions do you take?

Why they ask: To test your handling of a common physical-loss incident.

7. Tell me about a time you noticed something unusual in a system or process and followed it up.

Why they ask: To see whether you have the curiosity and diligence that makes a good analyst.

8. What does a typical shift as a junior cyber security analyst involve, and how do you feel about shift work and being on call?

Why they ask: To confirm you understand the reality of SOC-style work, including the hours.

A sample answer to question 1

Take me through how you would handle a security alert from the moment it appears in the queue to closing the ticket.

I'd start by reading the alert to understand what rule fired and why, then check its severity and whether I've seen it before or if a playbook exists. I'd gather context: the affected user and device, the time, the source and destination addresses and the process or file involved. I'd check the asset's criticality and whether there's an approved change or known testing that explains it. Then I'd validate with other data sources, such as EDR, proxy and authentication logs, to decide whether it's a true positive, a false positive, or benign activity. If genuine or uncertain, and above my authority, I'd escalate to a Tier 2 analyst, with a clear summary of what I found, the evidence and my recommendation. If it's a false positive, I'd close it with the reasoning documented, and flag it for tuning if it recurs. Throughout, I'd record every step in the ticket with timestamps and meet the SLA for the severity, as clear notes make handovers and later audits much easier.

Common mistake to avoid: Closing alerts without recording why; escalating without any analysis

Want the rest?

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