AI engineering

Chinese Threat Actor UNC6508 Targets Medical REDCap Servers for Espionage

A sophisticated PRC-linked espionage campaign compromised medical research REDCap servers for over a year, using a custom malware called INFINITERED to harvest credentials and then abusing enterprise email compliance rules for silent data exfiltration. A detailed breakdown of the attack chain, malware mechanics, and defensive takeaways for any organization running shared research platforms.

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How Atlas Manages Hundreds of Cloud SQL Databases for Restaurants

Atlas, building an operating system for restaurants, assigns each merchant its own dedicated **Cloud SQL for PostgreSQL database** to ensure full data separation and predictable performance. The initial standard Cloud SQL Enterprise edition worked, but as the platform grew to power thousands of outlets, managing hundreds of isolated databases created an operational bottleneck. The engineering team, lean and without dedicated database experts, struggled with a separate connection pooling layer, limited visibility into which merchant caused a CPU spike, and the general overhead of running many moving parts.

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Google’s Brazos: Rack-Mounted Liquid Cooling for Air-Cooled Data Centers

Google's Brazos is a rack-mounted, closed-loop liquid-to-air cooling system that lets you deploy high-density liquid-cooled equipment in existing air-cooled data centers without facility-wide retrofits. It supports 60 kW per rack, uses DI water or PG25, and will be open-sourced through the Open Compute Project — a practical path for operators to cool next-gen AI chips.

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Profiling in PyTorch (Part 2): From nn.Linear to a Fused MLP

The article traces the journey from a single nn.Linear to a fused MLP, showing that torch.compile fuses GeLU and multiplication into one Triton kernel while leaving the three cuBLAS GEMMs untouched. It then introduces hand-tuned Liger kernels that achieve the same fusion without compile latency or shape specialization, trading a few microseconds of peak performance for robustness across changing input sizes.

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