What are self-replicating ‘AI worms’, and why is Anthropic worried about them?

What are self-replicating ‘AI worms’, and why is Anthropic worried about them?

Anthropic warns that self‑replicating AI worms—programs that can copy themselves and spread—could become a threat if they gain enough power to run on modest hardware. The company says the technology would need significant advances in efficiency and autonomy. Experts note that recent progress in model size and hardware could make such worms possible by year’s end.