Anthropic said its AI models hacked into other companies’ systems during testing

AI company Anthropic says that during routine testing some of its models accessed the internet and hacked into three separate organizations’ systems – and that it didn’t notice the models had done so until an internal review prompted by rival OpenAI disclosing its models did the same. Anthropic said in an announcement

Anthropic Says Claude Breached Three Real Companies During Safety Test  Forbes

OpenAI and Anthropic say their models broke into other companies' systems during testing, raising security concerns amid a heated debate over how to regulate AI.

Anthropic claims its artificial intelligence models went rogue during testing and hacked into three other companies. Less than two weeks ago, OpenAI reported a similar incident for one of its models. Stephen Witt, author of "The Thinking Machine," joins to unpack the situation.

Anthropic said some of its artificial intelligence models mistakenly accessed the Internet and hacked into the databases of three other companies.

Clement Delangue said he didn't want cyber attacks on other companies to become "normalised".

Anthropic, the San Francisco-based AI company behind Claude, posted on its website Thursday that it discovered the three incidents after reviewing more than 141,000 evaluation runs.

The popular AI assistant Claude went rogue and hacked into three companies during an experiment, its creators have revealed.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

AI startup Anthropic claims that its Claude AI models hacked the systems of three separate organizations during cybersecurity evaluations.

Rival firm OpenAI last week disclosed similar incidents involving its models.

Bangoland / Shutterstock Headlines about AI systems going rogue and “escaping” test environments undeniably capture the imagination. For years, we have been primed by films, TV and books to expect our AI to finally throw off its shackles and take charge. The images of machines becoming self-aware, plotting their own o

Anthropic said its artificial intelligence models hacked into three other organizations during testing, just days after ChatGPT maker OpenAI raised concerns over AI controls after it disclosed its rogue models hacked another company. Anthropic, the San Francisco-based AI company behind Claude, posted on its website Thu

Anthropic posted on its website Thursday that it discovered the three incidents after reviewing more than 141,000 evaluation runs.

Hugging Face CEO speaks out after company hacked during OpenAI test  CNN

San Francisco-based Anthropic said its AI Claude found a weakness and connected to the internet to launch cyber attacks on three organisations

Anthropic just realized several of its Claude AI models hacked into the systems of three different organizations during testing, acting on their own and without the company noticing. The revelation comes days after rival OpenAI said one of its own models had breached developer platform Hugging Face, adding to growing u

Anthropic found the intrusions while reviewing its own testing records after OpenAI disclosed a similar incident.

The incidents involved 3 Claude models operating in an evaluation environment that was inadvertently connected to the internet

Anthropic says Claude AI models breached three organisations during cyber tests  thenationalnews.com

Revelation comes after OpenAI revealed that experimental models had broken out of their restrictions and hacked fellow AI companies

Anthropic has claimed its artificial intelligence models hacked into three other companies during testing, just days after rival OpenAI disclosed its rogue models hacked another firm.

Anthropic reviewed 141,006 of its own test runs after OpenAI's Hugging Face hack, and found three Claude models had broken into three real companies. Claude Opus 4.7, Mythos 5 and an unreleased model used basic techniques like weak passwords and SQL injection. One uploaded malware to PyPI that 15 systems ran. Two victi

Anthropic’s Claude Hacked Three Organisations During AI Test  Dawn

The latest disclosure underscores how AI has increased threats to cybersecurity and how its developers can struggle to keep the capabilities of their models contained

The incidents have heightened concerns about AI agents, software products designed to perform tasks autonomously.

Three separate versions of Claude AI broke out of cybertesting environments and hacked three firms, its developer Anthropic said. The development comes days after rival OpenAI reported a rogue agent hacked a startup.

Anthropic disclosed on Thursday that its Claude artificial intelligence models escaped their isolated testing environments, accessed the internet, and breached the systems of three unnamed companies. The announcement came over a week after OpenAI said two of its autonomous agents went rogue and accessed AI firm Hugging

5 min readNew DelhiJul 31, 2026 08:47 AM IST Anthropic has paused its cybersecurity evaluations after discovering three incidents involving Claude AI models.(Image: Reuters)Amid the intensifying debate around autonomous AI systems and cybersecurity, frontier AI lab Anthropic, on Thursday, July 30, said that it had foun

July 30 (Reuters) - Anthropic said on Thursday its AI model Claude hacked into the systems of three companies during testing after a configuration error gave it internet access, days after rival OpenAI disclosed a rogue-agent episode involving AI firm Hugging Face.

Wrote and published malware during tests, which is apparently OK because leaky test environments were the real problem

The incident comes just days after rival OpenAI first revealed its models went rogue during security testing.

US technology firm Anthropic says its artificial intelligence (AI) models hacked into the systems of three other firms during a cybersecurity test due to an error that gave them access to the internet.

Anthropic says it found multiple incidents in which Claude models gained access to unauthorized data. Bloomberg/Getty Images Anthropic said Claude models accessed data from three firms without permission since April. Anthropic said it conducted a review after the OpenAI-Hugging Face breach. There are growing fears abo

Anthropic said its AI model Claude hacked into the systems of three firms during testing after a configuration error gave it internet access, days after rival OpenAI disclosed a rogue-agent episode.

Anthropic Says Claude AI Hacked Three Companies During Cyber Tests  huffpost.com

In a review triggered by OpenAI's Hugging Face incident, Anthropic discovered three of its AI models had breached real organizations during third-party evaluations.

Anthropic says its Claude AI model hacked systems of three companies during tests just days after its rival OpenAI said their AI agents went rogue.

Anthropic said in a blog post that it made the discovery after performing a review of its own cybersecurity tests, following OpenAI's announcement of a breach last week.

After OpenAI's models broke into Hugging Face, Anthropic checked its own history and found three similar incidents.

The artificial intelligence firm Anthropic revealed Thursday its Claude model escaped an isolated testing environment at least three times and accessed the systems of three different organizations without a prompt to do so. Anthropic said in a blog post Thursday evening it reviewed more than 141,000 evaluations of Clau

Start-up discloses breach a week after rival OpenAI reported similar incident

Anthropic AI Models Hacked Three Companies During Tests  WSJ

Claude thought it was in a simulation. It was on the open internet, and the companies it broke into were real.

Claude thought it was in a simulation. It was on the open internet, and the companies it broke into were real.

The admission from Anthropic comes just days after ‌rival company OpenAI revealed a rogue agent had gone on a days-long ‌hacking spree at ⁠AI firm Hugging Face.

Anthropic says its AI models hacked systems of three companies during tests  Reuters

July 30 : Anthropic said on Thursday its AI model Claude hacked into the systems of three companies during testing after a configuration error gave it internet access, days after rival OpenAI disclosed a rogue-agent episode involving AI firm Hugging Face.Anthropic said a misconfiguration allowed Claude models to reach

Some of Anthropic's most powerful models — including Mythos 5 and an internal research model — gained unauthorized access to real-world systems during pre-deployment cybersecurity testing, the company said Thursday. Why it matters: OpenAI's and Anthropic's latest disclosures show frontier AI models reaching real-world

Artificial intelligence tools are quickly advancing in sophistication and capabilities, raising alarm among researchers and industry figures who say the technology needs to be more tightly regulated. This comes as OpenAI, maker of ChatGPT, recently disclosed that one of its experimental AI agents went rogue and secretl

The program, ChatGPT for Academic Researchers, will start with 10,000 participants this summer.

A ChatGPT bot broke out of its cage and was doing slightly more than just fine (Picture: Metro/Getty Images) An AI model by the company behind ChatGPT has compromised a company for the second time. OpenAI said last week that two of its models escaped and launched a cyberattack on Hugging Face, a digital library of AI m

Claude Mythos Preview discovered new attacks in testing against weakened cryptographic algorithms, which protect online financial transactions, private communications and more.