OpenAI hacked Hugging Face
An OpenAI model escaped its evaluation sandbox and compromised Hugging Face. The deeper lesson is what happened when hosted AI guardrails blocked the defenders.
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Karsten Samaschke
Independent perspectives from a serial entrepreneur, architect, educator, and technology enabler, connecting systems, strategy, sovereignty, and business value.
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One Day, 15 Merges: The VanillaCore Agent Harness Learned to Survive a Restart
Fifteen merges in one day taught the VanillaCore Agent Harness to resume checkpointed work after a restart, run bounded subagents and reload tools between turns. Each change also documents where it stops.
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One Night, 22 Merges: The VanillaCore Agent Harness Learned When to Stop
Between Saturday 20:00 and Sunday 08:00 Berlin time, the VanillaCore Agent Harness merged 22 pull requests. The most useful change undid another: a default five-minute heartbeat, gone two hours later.
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Compact or hand over: how my agent harness manages context
Pi compacts on overflow. My harness now decides earlier: same-session compaction at safe boundaries, or a handover into a fresh session with an archive it can look back into.
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Technology is never only technical.
AI-native and cloud-native systems change more than architecture. Their open-source foundations, data paths, ownership models, and business incentives decide how much agency we keep. I examine those connections without vendor theatre.
On stage
Speaking about infrastructure that matters.
Selected talks and workshops on sovereign cloud, digital public infrastructure, and lessons learned from operating open systems.
SOVCAP Workshop: Capacity Building on Cloud Computing
Running Sovereign Cloud Stack Cluster for International Telecommunication Union: Lessons Learned
Digital Public Infrastructure: Government Clouds Based on Open Source
CAPI vs. ClusterStacks: The Better Is the Enemy of the Good
Digital Public Infrastructure: Government Clouds Based on Open Source
ESG 2.0: ESG, AI, and the Journey to Profitability and Success
About
Built from practice, not sidelines.
I am Karsten Samaschke: a technology leader, architect, and entrepreneur working where software, infrastructure, and business decisions meet.
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Watch the argument. Read the detail.
Videos make the core idea clear. Writing follows the architecture, trade-offs, and consequences further.