Banned Nvidia B300 GPUs Found in State-Owned China Telecom

How banned silicon surfaced on China Telecom's network

State-backed operators are not supposed to have access to Nvidia's bleeding-edge Blackwell architecture. Yet Israeli security firm Lava spotted 32 Nvidia Blackwell Ultra B300 accelerators running live workloads inside China Telecom, according to original reporting by The Information and Tom's Hardware.

Lava did not need physical access or an intelligence raid to find them. The firm detected the accelerators through Nvidia's own Data Center GPU Manager (DCGM) Exporter tool. Operators regularly deploy DCGM to monitor cluster temperatures and health, but misconfigurations can leave telemetry interfaces exposed beyond the internal intranet without password requirements. That administrative oversight revealed the exact hardware profiles operating inside the telecom giant.

Smuggling networks vs. export controls

The presence of 32 units demonstrates that third-party diversion pipelines remain active. While the US Department of Commerce limits sales of high-performance accelerators strictly to whitelisted buyers who commit to preventing secondary exports, gray-market brokers routinely reroute shipments through third-party shell companies.

Smuggling high-end silicon into China is hardly unprecedented. In 2025, illicit networks smuggled roughly $1 billion worth of Nvidia compute into the country over a single three-month span. While previous runs focused heavily on earlier B200 hardware, brokers clearly shifted attention to Blackwell Ultra silicon the moment shipments went live.

This dynamic mirrors broader enforcement hurdles across global tech supply chains, reminiscent of regulators trying to plug hardware leaks such as when the FCC banned devices over hidden Huawei silicon to halt untracked enterprise usage.

Nvidia downplays the fallout

Nvidia did not deny the validity of Lava's findings, but the chipmaker pushed back strongly against the idea that export controls are systematically failing. In a statement to Tom's Hardware, an Nvidia spokesperson characterized illegal diversions as representing less than half of one percent of controlled products in recent enforcement cases.

Calling the diversion a drop in the bucket, Nvidia argued that a cluster of 32 GPUs is practically negligible when compared to the tens of millions of accelerators deployed legally worldwide. Even so, the discovery puts China Telecom in direct crosshairs for stepped-up US enforcement actions and tighter distributor audits.

Availability and regulatory impact

For enterprise customers in North America and Europe, the incident will not disrupt existing Blackwell Ultra allocation schedules, though compliance audits for downstream server vendors are expected to tighten. The US Commerce Department routinely responds to enterprise leaks by expanding know-your-customer requirements for cloud providers and distributors based in neutral transit hubs across Southeast Asia and the Middle East.

Thirty-two GPUs will not tilt the global AI balance, but finding Blackwell Ultra silicon inside a flagship state carrier proves that export barricades remain porous.