LATEST
Engineering
Magatama
Retrospective
AI Safety
Model Training
Risk Management
Part 3 of Magatama's journey reveals unseen risks in model training and highlights the need for additional safeguards before execution gates.
Rene Fichtmueller
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2026-07-18
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~2 min read
Engineering
Magatama
Retrospective
A diagnosis-only agent held up fine, until I noticed I was doing the same manual fix every time it was right. Here's the middle ground I landed on between full autonomy and a blind whitelist.
Rene Fichtmueller
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2026-07-17
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~2 min read
Engineering
Magatama
Retrospective
The first part of a short series on how Magatama went from manual alert triage to an autonomous ops agent, starting with the deliberately powerless version that could only explain what was wrong.
Rene Fichtmueller
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2026-07-16
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~3 min read
Engineering
Magatama
AI
A duplicate training job that wouldn’t stay dead, and a batch of corrupted weights that came within seconds of going live. Notes from a rough week running my own training infrastructure.
Rene Fichtmueller
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2026-07-15
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~4 min read
Engineering
Magatama
Security
AI
I pointed a serious security audit at Magatama, the agent I built to run my own server fleet, and asked exactly one question: how could its own autonomy be turned against me. Five things came back confirmed, and all five got fixed the same day.
Rene Fichtmueller
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2026-07-14
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~4 min read
Engineering
NOGnet
Long before NOGnet was a platform or a business decision, it was a stack of small, repeated annoyances I picked up simply by showing up to events as an ordinary attendee, year after year.
Rene Fichtmueller
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2026-07-13
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~3 min read
outlook
optics
networking
Coming off the H1 retrospective, here are six things I'll be tracking through the second half of 2026. I've split them by confidence — three calls I&
Rene Fichtmueller
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2026-06-30
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~4 min read
retrospective
optics
networking
Six months into 2026. Time for the half-year retrospective.
I don't keep a formal prediction list. I do leave a lot of directional calls scattered through posts, mailing
Rene Fichtmueller
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2026-06-29
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~4 min read
irr
rpki
route-filters
RPKI got the attention. Cyber-insurance language rewritten, hyperscaler peering policies tightened, deployment curves bending upward. The industry has had three years of sustained conversation about routing security, and it'
Rene Fichtmueller
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2026-06-26
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~4 min read
lpo
optics
hyperscalers
In April I wrote about linear drive optics and called it a power-budget story. The argument: LPO trades modest reach for significant power savings, right for AI fabrics inside a
Rene Fichtmueller
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2026-06-25
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~4 min read
// 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.