Prompt injection defense in depth for tool-using agents
Layer content separation, tool authorization, approvals, output validation and monitoring rather than relying on a single prompt.
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PostgreSQL 18 OAuth client authentication: architecture before configuration
Understand resource owner, client and token roles before wiring PostgreSQL clients to an authorization server.
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PostgreSQL 18 migration: separate performance opportunity from upgrade risk
Use release features such as AIO and skip scan as hypotheses to benchmark while keeping compatibility validation independent.
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PHP 8.5 URI handling: safer parsing is not the same as authorization
Use structured URI parsing while keeping allowlists, redirect policy and server-side authorization as separate controls.
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Per-user tool authorization: never let the model become the policy engine
Make application code decide whether a user may invoke a tool with specific parameters, while the model only proposes actions.
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OWASP LLM Top 10 2026: test excessive agency as an authorization failure
Model excessive agency as a mismatch between model capability, tool permissions and business authorization.
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OWASP API SSRF: defend the outbound request path, not only the URL field
Control destination resolution, protocols, redirects and network egress for features that fetch user-influenced URLs.
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Node.js 22 security release response: patch by affected surface, not panic
Prioritize a Node LTS security release by matching advisories to TLS, crypto, HTTP/2 and deployment exposure.
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Operating NIST AI RMF for an agent platform: turn categories into evidence
Translate risk-management intentions into ownership, test evidence, incident records and deployment gates for an agent system.
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MySQL 8.4 local_infile: keep import convenience from becoming a file boundary problem
Constrain file import behavior with server options, privileges and deployment assumptions rather than treating local_infile as a harmless toggle.
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MCP Streamable HTTP security: stop DNS rebinding before it reaches local tools
Deploy Streamable HTTP with Origin validation, safe binding and authentication so a browser cannot pivot into a local MCP server.
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Human approval for MCP tools: design the interruption, not just the button
Capture the exact pending action, show material parameters, obtain approval, then resume without silently changing the request.
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