k9 Security Blog

Secure your cloud infrastructure quickly and confidently

EPSS vs KEV: the 2% score on a ransomware CVE

On August 25 our weekly triage deferred a Starlette alert with a 2% EPSS score. On September 1 the same alert, same code, same 2% score, was the only advisory in a 127-alert backlog that had to be fixed that day. Nothing about the vulnerability changed in that week....

Why coding agents need help triaging dependency alerts

“Why not just prompt Claude Code or Copilot to triage dependency alerts per our security policy?” is the right question. A coding agent can read your code, trace a call path, and reason about whether a vulnerable function is reachable. That is the hardest part of alert...

How to Prioritize CVEs by Risk, Not Severity

In 24 hours we scored the same CVE three times against three different projects, and it came back DEFER on one and SCHEDULE on the other two. Every call was right. The scanner’s severity label read “high” all three times. What changed was the asset context, and with it...

Severity is no longer a triage input. Risk scoring you own is.

“I’m sorry, Dave. I’m afraid I can’t do that.” NIST said it more politely on April 15. The NVD change is permanent, not a temporary glitch. CVE volume has outpaced NIST’s analysis capacity. For 25 years, vulnerability-management programs assumed the National...

Building Evals for an AI Agent: From Zero to Consistency Testing

We’re building an AI agent that triages cloud security findings. It reads a finding from AWS Security Hub or Prowler, assesses the risk, and tells an engineer exactly what to do about it with specific AWS CLI commands they can run. The agent worked. We had 620 unit...

How to Connect Strands Agents to AWS MCP with IAM Authentication

We’re building a cloud security agent with Strands Agents that triages AWS security findings. The agent uses the AWS Knowledge MCP server to search and read AWS documentation. The agent looks up remediation guides, CLI syntax, and best practices as part of its...

The top AWS Identity and Organization security launches of 2025

The AWS Identity and Organization teams launched some big improvements to IAM in 2025. Read on for a quick introduction to the six changes we think are most likely to help you make an impact securing your AWS organization and identities: Enforce MFA for root users...

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