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Meta·Software Engineer·Technical Phone Screen·Senior

Senior
May 2026

Summary

Security engineer screen at Meta with one scenario-based question about hardening a work laptop for a high-risk environment. Pretty focused, no fluff.

Questions Asked (1)

Q1

Your manager asks you to bring your work laptop to DEFCON. How do you secure it before and during the trip?

Technical Trade-offsSystem DesignAdaptability & Ambiguity
Author's notes

This one has more layers than it looks.

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AI HintsAI Generated

Suggested Approach

Acknowledge the inherent risks of bringing a work laptop to DEFCON and propose a layered security strategy covering pre-trip hardening, during-trip precautions, and post-trip remediation. Emphasize minimizing data exposure and assuming the device will be compromised, while balancing productivity needs.

Pro tip: Mention that you would request a loaner laptop or use a virtual desktop infrastructure (VDI) to avoid bringing sensitive data at all—this shows you prioritize security over convenience and understand Meta's scale.

1. Pre-Trip Preparation

Back up all data, wipe the laptop, and reinstall a clean OS with full disk encryption. Remove all sensitive data and install only necessary software.

2. Harden the Device

Enable strong authentication (e.g., biometrics, long passphrase), disable unused ports and services, and ensure automatic updates are on. Use a privacy screen and tamper-evident seals.

3. During the Conference

Keep the laptop physically secure (e.g., in a locked bag, never leave unattended). Avoid connecting to untrusted networks; use a VPN and a personal hotspot if needed. Disable Wi-Fi/Bluetooth when not in use.

4. Post-Trip Remediation

Upon return, assume the device is compromised: change all passwords, run a full malware scan, and reimage the laptop before reconnecting to corporate networks.

Key Points to Mention

  • Full disk encryption and strong authentication
  • Minimizing data: use a loaner or VDI, or wipe before travel
  • Physical security: locked bag, never leave unattended, tamper-evident seals
  • Network security: avoid public Wi-Fi, use VPN, disable unused radios
  • Post-trip reimaging and credential rotation
  • Balancing security with productivity needs

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