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Document Parsing for RAG in 2026: Why Ingestion Decides Retrieval QualityEvery RAG system is only as good as the documents it ingested. This guide covers the 2026 document-parsing and chunking stack — Docling, Marker, Unstructured, and chunking toolkits — and why getting ingestion right matters more than your choice of vector database.13 min readeBPF Runtime Security in 2026: Falco vs Tetragon vs TraceeUserspace security agents are giving way to eBPF, which watches the kernel itself with under 1% overhead. A deep comparison of the three open-source eBPF runtime security tools — Falco, Tetragon, and Tracee — covering detection, enforcement, forensics, and how to choose.13 min readLLM Observability in 2026: Tracing, Evaluation, and the OpenTelemetry ShiftYou cannot improve an LLM app you cannot see. This guide covers the observability stack that ships in 2026 — distributed tracing for agents, LLM-as-judge evaluation, and why OpenTelemetry became the connective standard, with Phoenix, Langfuse, and MLflow as worked examples.13 min readModern Network Diagnostics from the Terminal: Trippy, doggo, and the New CLI ToolkitThe classic network toolkit — ping, traceroute, dig — still works, but a generation of Rust and Go tools makes diagnosing latency, routing, and DNS dramatically faster. A practical guide to the modern terminal network toolkit and the workflows that actually find problems.13 min readBehavioral Supply Chain Security in 2026: Catching Malicious Packages Before They RunCVE scanners tell you about yesterday's known bugs; they say nothing about the malicious package published an hour ago. A guide to behavioral supply chain security in 2026 — how tools like Socket, Syft, Grype, and Sigstore fit together to defend the open-source dependency tree.13 min readProduction RAG in 2026: Hybrid Search, Reranking, and GraphRAGThe naive embed-and-retrieve RAG of 2023 quietly failed in production. This guide covers the architecture that actually ships in 2026 — hybrid search, cross-encoder reranking, GraphRAG, and the evaluation discipline that holds it all together.13 min readAI-Powered Offensive Security in 2026: The MCP Tool-Server BoomIn eighteen months the offensive-security world went from a handful of AI experiments to seventy-plus tools, and the Model Context Protocol is the connective tissue. A look at how MCP tool-servers like pentest-ai and HexStrike are reshaping pentesting — and what defenders should take from it.13 min readReinforcement Fine-Tuning for Agents in 2026: GRPO with ART, verl, and OpenRLHFSupervised fine-tuning teaches an agent what good answers look like; reinforcement learning teaches it to get good outcomes. A practical guide to training multi-step LLM agents with GRPO using ART, verl, and OpenRLHF — architectures, reward design, and when to use each.13 min read

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