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Security Incident Response and Operations Questions

Covers the practices, processes, and tooling for responding to security incidents and operating a security capability. Topics include the security incident lifecycle of preparation, detection, analysis, containment, eradication, recovery, and post incident review; development and execution of playbooks and runbooks tailored to threat types; severity classification and decision criteria for escalation; evidence preservation and forensic analysis and chain of custody; crisis communication to stakeholders and regulators; notification and regulatory compliance considerations; and coordination with legal, privacy, communications, and executive leadership. Also includes operational aspects of building and staffing a security operations center, on call schedules and escalation, ticketing and case management, leadership and coordination during major incidents, running blameless post incident reviews to identify systemic improvements, and integration of security incident learnings into engineering and operations.

MediumTechnical
0 practiced
Provide a Python script outline (pseudo-code acceptable) for automating rotation of a compromised container image across a Kubernetes deployment: pull new image, deploy canary, run health checks, promote, and rollback if health checks fail. Describe how to ensure zero-downtime and safe rollbacks.
MediumSystem Design
0 practiced
Design an automated runbook execution pipeline that takes alerts from a SIEM, enriches events (asset tags, owner, threat intel), executes safe automated steps (e.g., quarantine), and escalates to on-call SREs if confidence is low. Include components, data flow, idempotency, audit trails, and safety controls. Assume ~50k alerts/day and average decision latency target of 100ms.
MediumTechnical
0 practiced
Design monitoring and automated response for detecting large-scale data exfiltration from S3 buckets. Include telemetry to collect (CloudTrail object-level logging, access patterns, transfer metrics), detection heuristics, anomaly thresholds, and containment steps to prevent further exfiltration.
MediumTechnical
0 practiced
Discuss how SLOs and error budgets should influence decisions during security incidents. Provide examples where you would throttle feature changes, increase monitoring, or pause deploys, and explain how security incidents should be reflected in SLO reporting (if at all).
MediumTechnical
0 practiced
Ransomware is executing on a production Kubernetes cluster and encrypting PVCs. As the SRE lead, outline immediate containment steps, decisions about halting pods/nodes, backup validation and recovery strategy, communication with customers, and long-term controls to prevent recurrence.

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