Public story · 2026-02-21 · source-backed
Agent Security (Priority: +2.0)
Story
1. Harden CI/CD Pipelines Against PromptPwnd AI Injection | Intermediate Aikido Security disclosed "PromptPwnd" — five Fortune 500 companies confirmed affected by AI agent injection in GitHub Actions.
- Audit all
.github/workflows/for user-controlled input (github.event.issue.title) passed into AI agent prompts - Sanitize untrusted input:
SANITIZED_TITLE=$(echo "$TITLE" | tr -cd '[:alnum:] -' | cut -c1-200) - Restrict AI agent tool access to read-only in triage/analysis workflows
- Set minimal
permissions:—contents: read,issues: read, never write access to AI agent jobs - Add OpenGrep detection rules for untrusted content interpolated into AI prompts Source: Aikido Security
2. Defend Against AI-Augmented Credential Scanning | Intermediate The FortiGate campaign proved basic defense-in-depth defeats AI-augmented attacks — hardened targets were simply skipped.
- Audit all perimeter devices for exposed management interfaces on ports 443, 8443, 10443, 4443
- Enforce MFA on ALL admin and VPN access — the campaign succeeded only against single-factor targets
- Rotate SSL-VPN and admin credentials with 16+ character minimum
- Segment management interfaces onto dedicated VLANs with IP allowlists
- Deploy detection for DCSync, pass-the-hash, and Veeam backup server access (ransomware staging indicator) Source: AWS Security Blog
3. Harden AI Coding Tool Supply Chains with OIDC | Advanced The Clinejection attack chain (prompt injection -> token theft -> malicious publish) is now the template. Defend against it.
- If you installed
[redacted]: uninstall cline AND openclaw globally, reinstall latest, rotate ALL credentials - Migrate npm publishing from static tokens to OIDC via GitHub Actions (
--provenanceflag) - Run
uvx mcp-scan@latest --skillsto audit all installed agent skills and MCP servers - Generate AI Bill of Materials:
snyk aibomto inventory all models, agents, tools, and skills - Disable Actions cache consumption in workflows handling publication secrets Source: Snyk Blog
4. Implement Runtime MCP Security | Advanced Production agents need runtime defense — the "guardrail sandwich" pattern with tool call authorization.
- Input sanitization with trust labeling on ALL data sources (user prompts, RAG, tool responses, MCP descriptions)
- Tool call authorization: whitelist allowed tool + argument combinations, reject everything else
- Rate limiting per-session and per-minute on tool calls; flag anomalous patterns
- Version-locked, digitally signed tool definitions; regular
mcp-scanfor tool poisoning detection - Comprehensive audit trails via OpenTelemetry across all tool invocations Source: Microsoft Security Blog
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