Q1
Walk me through how you would analyze a suspicious network traffic pattern using tools like Wireshark or Zeek. What indicators would you look for to determine if it's a potential data exfiltration attempt?
Why they ask this:* They want to assess your hands-on experience with packet analysis, threat detection methodologies, and your ability to identify malicious behavior at the network layer—a core competency for mid-level analysts.
Q2
Explain the difference between signature-based and anomaly-based intrusion detection. In what scenarios would you recommend each approach for a tech company's infrastructure?
Why they ask this:* This tests your understanding of IDS/IPS detection mechanisms and your ability to make strategic decisions about security tool deployment based on organizational needs and threat landscapes.
Q3
Describe your experience with vulnerability scanning tools like Nessus or OpenVAS. How do you prioritize and triage findings, and what's your process for validating false positives?
Why they ask this:* They're evaluating your practical experience with vulnerability management, your ability to reduce alert fatigue, and your understanding of risk assessment—essential skills for preventing security incidents.
Q4
What authentication and encryption standards would you implement to secure API communications in a microservices architecture, and why?