← Google Interview Insights

Google·Software Engineer·Technical Phone Screen·Intermediate

Intermediate
Jun 2026

Summary

Interviewed for a security engineer role at Google. One question, pretty foundational stuff, but the way they asked it left room to go deep if you wanted to.

Questions Asked (1)

Q1

What are some of the most common cyber attacks seen today, and can you walk through one of them in detail?

Technical Trade-offsRoot Cause Analysis
Author's notes

Seemed broad at first but they clearly wanted you to pick one and actually explain it, not just rattle off a list.

Create a free account to read the full note

AI HintsAI Generated

Suggested Approach

Start by briefly listing the most common cyber attacks (e.g., phishing, ransomware, DDoS, SQL injection, XSS) to show breadth, then select one attack to walk through in detail, covering how it works, why it's effective, and potential mitigations. Tailor the detailed example to demonstrate technical depth and relevance to software engineering at Google, emphasizing root cause analysis and trade-offs in defense.

Pro tip: Choose an attack that aligns with Google's focus on scalable systems and security, such as a large-scale DDoS or a supply chain attack, and discuss both technical and organizational mitigations to show a holistic understanding.

1. List common attacks

Briefly name 4-5 prevalent cyber attacks (e.g., phishing, ransomware, DDoS, SQL injection, XSS) to establish a broad understanding.

2. Select one attack

Choose one attack that you can explain thoroughly and that is relevant to the role, such as SQL injection for a software engineer.

3. Explain the attack mechanism

Walk through how the attack works step-by-step, including the vulnerability exploited, the attacker's actions, and the impact.

4. Discuss root causes and trade-offs

Analyze why the attack succeeds (e.g., poor input validation, lack of encryption) and the trade-offs in preventing it (e.g., performance vs. security).

5. Propose mitigations

Suggest technical and procedural defenses (e.g., parameterized queries, WAF, security training) and how they address the root cause.

Key Points to Mention

  • Phishing, ransomware, DDoS, SQL injection, XSS, and supply chain attacks as common today.
  • For SQL injection: unsanitized user input leading to unauthorized database access.
  • Root cause: lack of input validation and use of dynamic SQL queries.
  • Mitigations: parameterized queries, stored procedures, input validation, least privilege.
  • Trade-offs: performance overhead of input validation vs. security benefits.
  • Relevance to Google: scale of attacks, need for robust defenses, and security by design.

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.