Anthropic Warns Small AI Models Could Self-Replicate Through Smart Fridges and IoT Devices
Anthropic has demonstrated that small open-weight models can run on low-cost IoT hardware and may, within a year, autonomously self-replicate across unfamiliar devices.
Anthropic is warning that advances in small AI models could enable a new class of self-replicating malware targeting smart fridges, vacuum cleaners, and other IoT devices. The company says that by next year, smaller models may be able to autonomously self-replicate on such hardware, potentially giving rise to computer worms that propagate without human interaction and can infect devices they were never explicitly programmed for. The finding is tempered: Anthropic's own experiment revealed significant challenges in building such a replicator, and the company notes any resulting worm would likely be slow, with a doubling time measured in days.
The technical work centered on running small open-weight models on real or simulated low-cost, off-brand Android TV boxes and similar IoT hardware. Researchers used quantization to represent models with fewer bits and split workloads into shards distributed across devices. The Gemma4-26B-A4B model required just 15 boxes, each with only 4GB of memory, to achieve inference — meaning the model weights loaded and could generate output. The Qwen3.5-9B model was able to configure other LLMs to run on eight of nine hardware types tested.
What distinguishes this from traditional malware is adaptability. Conventional worms must be written for specific hardware or software targets. In Anthropic's tests, the model used its weights to make configurations on the fly for the specific devices it encountered. This suggests a replicator could figure out unfamiliar devices without prior programming.
Anthropic also warns that such a replicator would be difficult to shut down because there is no centralized point of control to disable. Unlike non-AI malware, it could adapt to new targets independently, though its propagation speed would likely remain slow.