Claude maker suggests models could act as 'worms' to spread across smart home appliances such as lawnmowers and TVs in future cyber security threat
Author of the article:

Anthropic has warned that rogue “AI worms” will soon be able to hijack smart home devices such as ovens and TVs, creating a new cyber security threat that will be difficult to contain.
Subscribe now to read the latest news in your city and across Canada.
- Exclusive articles from Barbara Shecter, Joe O'Connor, Gabriel Friedman, and others.
- Daily content from Financial Times, the world's leading global business publication.
- Unlimited online access to read articles from Financial Post, National Post and 15 news sites across Canada with one account.
- National Post ePaper, an electronic replica of the print edition to view on any device, share and comment on.
- Daily puzzles, including the New York Times Crossword.
Subscribe now to read the latest news in your city and across Canada.
- Exclusive articles from Barbara Shecter, Joe O'Connor, Gabriel Friedman and others.
- Daily content from Financial Times, the world's leading global business publication.
- Unlimited online access to read articles from Financial Post, National Post and 15 news sites across Canada with one account.
- National Post ePaper, an electronic replica of the print edition to view on any device, share and comment on.
- Daily puzzles, including the New York Times Crossword.
Create an account or sign in to continue with your reading experience.
- Access articles from across Canada with one account.
- Share your thoughts and join the conversation in the comments.
- Enjoy additional articles per month.
- Get email updates from your favourite authors.
Create an account or sign in to continue with your reading experience.
- Access articles from across Canada with one account
- Share your thoughts and join the conversation in the comments
- Enjoy additional articles per month
- Get email updates from your favourite authors
Sign In or Create an Account
The developer of Claude said in a blog post on Monday that AI agents may be months away from “self-replicating” across everyday household devices,to create potentially uncontrollable networks of AI agents.
Anthropic’s warning is the latest in a series of cyber security alarms raised by AI researchers as capabilities increase and models become more difficult to control.
Get the latest headlines, breaking news and columns.
By signing up you consent to receive the above newsletter from Postmedia Network Inc.
A welcome email is on its way. If you don't see it, please check your junk folder.
The next issue of Top Stories will soon be in your inbox.
We encountered an issue signing you up. Please try again
The San Francisco-based company said if AI models continued to improve at their current pace, the technology would be capable of spreading itself around the internet like computer “worms” — malicious software that can spread automatically from one device to another without human intervention.
“We’re seeing signs of life for AI worms,” Anthropic said in a research post, likening their slow spread across insecure devices to “digital slime mould”.
The warning suggests that the kind of attack that stunned researchers investigating the Hugging Face hack by “swarms” of OpenAI agents this summer could be launched against devices owned by unwitting homeowners and businesses.
Anthropic’s latest warning refers to so-called “internet of things” devices which have proliferated over the past decade, as consumers use devices that control lights, plugs, thermostats and security systems.
Many of these internet-connected devices have historically offered poor levels of security because they were cheaply made by commodity hardware manufacturers, used for illegal streaming of TV services, or the companies that originally created them have gone out of business.
This insecure hardware creates fertile ground for hackers, who are already using AI’s coding proficiency to accelerate and personalize their attacks. Anthropic said other targets for “autonomous worms” included security cameras with built-in AI chips, “smart fridges, smart ovens, automatic vacuum cleaners and lawnmowers”.
Worms have long been a popular and effective way for hackers to distribute malware because they are able to replicate and spread quickly across a large network.
Prominent examples include the ILOVEYOU virus that spread across Windows PCs in the early dotcom era, 2010s Stuxnet that originally targeted Iran’s nuclear program and the widespread WannaCry ransomware that hit organizations including Deutsche Bahn, the United Kingdom National Health Service, Telefónica, Renault and FedEx.
AI-powered worms would combine these examples’ ability to spread themselves around the internet with the advanced capabilities of AI models.
“We expect a future awash with agents running on all types of hardware, including some that aren’t under human control,” Anthropic said. “While it’s true that IoT devices have been vulnerable for a long time, lightweight agents may be much more willing than human attackers to put in the effort to compromise large fractions of the world’s IoT compute.”
At first, these AI worms would propagate slowly, akin to “slime mould or a swarm of fruit flies, which replicate over days”. But as consumer electronics become more sophisticated and models become more efficient, this could accelerate.
“We don’t yet have a full rogue replicator, but agents are becoming increasingly capable of completing the individual steps in the replication chain,” Anthropic said. “We should aim to harden our systems to make it difficult for such replicators to spread, but also prepare to deal with a world where they are here to stay.”
© 2026 The Financial Times Ltd
Join the Conversation
This website uses cookies to personalize your content (including ads), and allows us to analyze our traffic. Read more about cookies here. By continuing to use our site, you agree to our Terms of Use and Privacy Policy.
