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OpenAI described the breakout as the first security incident of its kind.
PHOTO: REUTERS
Published Sep 27, 2026, 09:45 AM
Updated Sep 27, 2026, 05:28 PM
AI generated
OpenAI said another agentic AI system that was being trained in what was supposed to be a secured, internet-free environment was able to gain access to the web to reach an external, third-party chatbot.
The discovery was made less than a week ago, according to a blog post on OpenAI’s website on Sept 25. One of its agentic AI systems was being trained in a sandbox environment when it exploited a “gap” to reach the public internet.
With that access, it sent at least 20 queries to an unnamed, third-party chatbot service, including “What is the capital of France”, the report showed.
OpenAI described the breakout as the first security incident of its kind since a combination of models gained internet access during internal testing and inadvertently breached the system of the AI platform Hugging Face in July.
“It gives us an important signal about where to focus the next phase of that work,” the AI developer said. The company said it decided after the latest incident to pause training with tool use on its most capable models until the sandbox flaw was resolved. “We will not resume training this particular model,” OpenAI added.
Breaches by AI models developed by OpenAI, Anthropic, Google’s DeepMind and Meta Platforms in recent months have alarmed cybersecurity and AI safety experts.
The Hugging Face incident was among the reasons cited by Anthropic chief executive officer Dario Amodei when he called for an industrywide slowdown in AI development two weeks ago.
His call, quickly endorsed by OpenAI CEO Sam Altman, Elon Musk and others, has touched off a global debate over the need for more AI regulation.
OpenAI disclosed the latest sandbox failure even while it is still working to understand the disruption brought about by its agentic artificial intelligence systems when they previously gained access to the internet.
The company confirmed on Sept 25 that its models accessed information from US government websites, including those of the Census Bureau and the Securities and Exchange Commission, during training and evaluation.
Just days ago, OpenAI disclosed that its models had disrupted an Australian government website earlier in 2026.
The most recent sandbox breach also exposed gaps in OpenAI’s operational processes.
A “human reviewer” received an alert from an internal monitoring system and acknowledged it on Slack within three minutes, but the training run did not automatically stop as expected, the blog post showed.
It took more than two hours for someone to manually stop the run, according to the report.
“It’s unfortunate that even after upping their security in the wake of Hugging Face, OpenAI’s models are still capable of gaining unauthorised internet access,” said Sydney Von Arx, founder of an AI safety non-profit Nightingale.
“The big question now is whether they will slap a Band-Aid on this and turn training back on ASAP versus if they’ll find the root cause of the issue and fix it.” BLOOMBERG
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