blog.fichtmueller.org
LATEST
Open Source Security AI LLM ShieldX Prompt Injection Self-Learning Kill Chain MITRE ATLAS MCP Guard TypeScript

ShieldX: Why Prompt Injection Defense Needs to Evolve Itself

500+ detection patterns. 10-layer pipeline. Kill chain mapping. And it learns from every attack it sees.

Rene Fichtmueller / 2026-04-05 / ~2 min read
Open Source Networking BGP RPKI PeerCortex ASPA Network Intelligence Internet Infrastructure Routing Security Health Check Peering

PeerCortex: Why I Built a Network Intelligence Platform

70,000+ networks. 13 health checks. One tool that didn't exist — so I built it.

Rene Fichtmueller / 2026-04-05 / ~2 min read
Optical Networking 800G 400G Deployment Data Center Optical Transceiver OSFP QSFP-DD PAM4 Network Design TCO Fiber Infrastructure

800G: The Upgrade That Exposes Everything

A $350 optic turned into an $18,000 problem. Not because the optic failed — because nobody cleaned the connector.

Rene Fichtmueller / 2026-04-05 / ~1 min read
// projects & tools
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Magatama
Unified Security Platform — 6 pillars covering AppSec, Cloud, AI, Pentest, Runtime & Compliance.
magatama.dev →
☸
PeerCortex
Network Intelligence Platform — RPKI, ASPA, BGP Health Reports for 70,000+ networks.
peercortex.org →
●
GitHub
Open source — PeerCortex, PaperCortex, ShieldX, Transceiver DB & more.
github.com/renefichtmueller →
◆
fichtmueller.org
20+ years in optical networking, ISP infrastructure & peering. Social Networker.
fichtmueller.org →
☼
NOGnet
Global NOG Support Program — empowering Network Operator Groups worldwide.
nognet.net →
// about the author
Rene Fichtmueller
Social Networker
20+ years building and breaking networks. Optical transport, peering, data center infrastructure. Writing about the things that go wrong at 2AM — and how to prevent them.
LinkedIn Website