rf.blog (Page 11)

400G 400ZR 400ZR+ Coherent Optics QSFP-DD OSFP DWDM Optical Networking Data Center Network Design Supply Chain Capacity Planning Lead Time DP-16QAM Indium Phosphide Optical Transceiver ECMP

Coherent 400G ZR+ — When Lead Time Becomes a Design Problem

The design is complete. Procurement comes back: 400ZR+ optics are not available for four to five months. That is not a supply chain problem. It is a design assumption problem.

Rene Fichtmueller / 2026-04-13 / ~3 min read

NOGnet FOGHORN Community Erik Bais

FOGHORN — Why a Whistleblowing Platform for the Internet Industry Matters

The internet industry talks a lot about uptime, redundancy, and resilience. But when it comes to the people running the networks, we have no failover. FOGHORN is my attempt to change that.

Rene Fichtmueller / 2026-04-11 / ~5 min read

AI Software Engineering Local LLM Build in Public LLM CostEfficiency RapidDevelopment

What I Built in 30 Days With My Local LLM Stack

In 30 days, I built over 20 production projects using my local AI model stack, achieving what would have taken months with traditional methods.

Rene Fichtmueller / 2026-04-10 / ~2 min read

TIP Transceiver Networking Budget Deployment Firmware

Price War: What 2026's Transceiver Market Shift Means for Your Budget

As 400G transceiver prices drop, understand the impact on budgets and deployments. Validate compatibility to avoid costly mistakes.

Rene Fichtmueller / 2026-04-10 / ~4 min read

ADHD Diary BGP ASPA RPKI PeerCortex Internet Infrastructure Routing Security

ADHD Diary #004 — ASPA, a Bad Doctor's Day, and Why PeerCortex Has Had This for a While

Today was not a good day. Since my spinal disc surgery, nothing has been working the way it should. Today was the full doctors' marathon — from practice to practice,

Rene Fichtmueller / 2026-04-07 / ~3 min read

Infrastructure Security Network The Glass Network cybersecurity infrastructure-warfare critical-infrastructure

The Invisible Battlefield — Infrastructure, Data, and the War Most People Don't See

In this post, I explore the reality of warfare targeting data centers and critical infrastructure, a shift that has been long predicted but is now becoming a harsh reality.

Rene Fichtmueller / 2026-04-07 / ~7 min read

Open Source LLM Security TypeScript AI Defense ShieldX AI Security Prompt Injection Defense Self-Evolving Systems

ShieldX v0.5.0 — Self-Evolving LLM Prompt Injection Defense (Open Source)

Learn about ShieldX v0.5.0 - the cutting-edge open-source solution for defending against prompt injection attacks on large language models.

Rene Fichtmueller / 2026-04-07 / ~4 min read

ADHD Diary No-Travel-Day Family Time Spring Activities Neurodivergent Personal Mental Health Work-Life Balance

ADHD Diary #003 — Easter Monday, Spring Vibes, and a Brain That Never Stops

Easter Monday brought unexpected joy with swimming, treats, and quality time. Discover how these moments are a treasure for an ADHD brain.

Rene Fichtmueller / 2026-04-06 / ~8 min read

ShieldX LLM Security Open Source Red Team Prompt Injection AI Security Penetration Testing Detection Rate TypeScript MITRE ATLAS

ShieldX v0.4: Red Team Results — 386 Tests, 99.6% Detection, Zero Failures

We red-teamed ShieldX v0.4 with 386 automated and manual attack scenarios across 13 attack categories. The result: 99.6% attack detection, zero test failures, and 100% kill chain coverage.

Rene Fichtmueller / 2026-04-06 / ~3 min read