Q: A developer accidentally pushed an AWS Access Key and Secret Key to a public GitHub repository. What steps do you take?
This is a critical security incident. The immediate priority is Containment:
#Security #Security #L1 #DevSecOps #Compliance #IAM
🎙️ Candidate Opening & Architectural Context
""Security in modern DevOps must be automated into the pipeline rather than bolted on after deployment. The interviewer is testing: Incident response workflow for leaked credentials, containment vs. investigation.. I structure my answer around systematic triage first, root cause analysis second, and permanent remediation third.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Initial Diagnostics & Root Cause Analysis
This is a critical security incident. The immediate priority is Containment:
- Go directly to AWS IAM and Deactivate (do not immediately delete) the leaked access key. Deactivating stops any further use while preserving it for forensics.
- Check AWS CloudTrail immediately for any actions performed by that specific access key since the time of the leak. Look for EC2 instance spawning (crypto-mining), IAM privilege escalation, or data exfiltration.
- Review the code repository and rewrite the Git history to remove the credentials permanently, then force push the clean history.
2️⃣
Remediation & Permanent Safeguards
- If the key was used maliciously, initiate your organization's Incident Response Plan (e.g., isolating compromised instances, rotating related secrets).
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: Go directly to AWS IAM and Deactivate (do not immediately delete) the leaked access key. Deactivating stops any further use while ."
⚡ 60-Second Elevator Pitch Talking Points
- Go directly to AWS IAM and Deactivate (do not immediately delete) the leaked access key. Deactiva...
- Check AWS CloudTrail immediately for any actions performed by that specific access key since the ...
- Review the code repository and rewrite the Git history to remove the credentials permanently, the...
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