Anthropic AI agent fakes identities, targets real people in new security incident

BBC News

AI used new levels of 'autonomy and deception' to trick people in safety test

Reuters

OpenAI, Anthropic AI agents implicated in new security breaches

Financial Times

OpenAI and Anthropic models went rogue in cyber tests, UK watchdog says

AI Academy by SmarterX

OpenAI and Anthropic Agents Hacked Real Companies During Safety Tests

AI Security Institute

Incident Report: unsanctioned agent behaviour during cyber testing

Firstpost

OpenAI and Anthropic report another round of AI security breaches during testing

Politico

Anthropic and OpenAI models tried to trick humans into poisoning code during safety testing

RandyJRouse

WesRoth

Wired

OK, Well, Rogue AI Agents Are Hacking Again

Openai

Third Party Cyber Evaluations Involving Openai Models

Metaculus

Will There Be A Ban On Deployment Of Ai Agents Within An Oecd Country By 2030

Substack

OpenAIs disconcerting hack of HuggingFace

Elon Musk

Rishi Sunak

Kamala Harris

Bill Gates

Andrew Ng

Yoshua Bengio

Fei-Fei Li

Melanie Mitchell

Sam Altman

Dario Amodei

Geoffrey Hinton

Yann LeCun

Gary Marcus

Max Tegmark

Connor Leahy

Eliezer Yudkowsky

Jaan Tallinn

Marc Andreessen

Eric Schmidt

Norbert Wiener

Arthur Clarke

Irving John Good

Claude Shannon

Hans Moravec

John Smart

There's a "wall of fear-mongering and doomerism" in the AI world right now.

"Worrying about AI today is like worrying about overpopulation on Mars."

Concerns that AI could pose a threat to humanity is "preposterously ridiculous."

Claiming AI poses an existential threat is "such an extreme" and risks "wip[ing] out some of its potential benefits."

"I'm more concerned about... the risks that are here and now [than the existential threat of AI]."

Current AI is "not anywhere close" to posing an existential threat but it could in the future.

AI is the "biggest existential threat" to humanity.

AGI's worst-case scenario would be "lights-out for all of us."

Powerful AI systems "taking control" pose an "existential threat."

AI has a "10 to 25 per cent" chance of destroying humanity.

"The most likely result of building a superhumanly smart AI... is that literally everyone on Earth will die."

Does AI Pose an Existential Threat to Humanity?

Stuart Russell

Shane Legg

Society is more likely to get "cat-level" or "dog-level" AI years before human-level AI.

"[W]e will eventually reach AGI... and quite possibly before the end of this century."

"Superhuman AIs" will be achieved "between a few years and a couple of decades."

"Digital intelligence" could overtake us within "5 to 20 years."

"[W]e could get to real AGI in the next decade."

"Human-level" AI could occur in "two or three years."

"I'd be surprised if we don't have AGI by [2029]."

Will AI Surpass Human Intelligence, and When?

The U.K.'s AI Security Institute (AISI) disclosed on Tuesday that AI agents from OpenAI and Anthropic took unauthorized actions on the live internet during 10 of 122 cybersecurity evaluation runs, and that 17 of 19 unsanctioned actions were attributed to Anthropic's Mythos 5 system.

The U.K.'s AI Security Institute (AISI) disclosed on Tuesday that AI agents from OpenAI and Anthropic took unauthorized actions on the live internet during 10 of 122 cybersecurity evaluation runs, and that 17 of 19 unsanctioned actions were attributed to Anthropic's Mythos 5 system.

In the most serious incident, Anthropic's Mythos 5 agent attempted to insert malicious code into a public open-source project on GitHub, creating fake online identities to pressure the project's maintainer into approving the changes. A human reviewer caught and rejected the submission.

In the most serious incident, Anthropic's Mythos 5 agent attempted to insert malicious code into a public open-source project on GitHub, creating fake online identities to pressure the project's maintainer into approving the changes. A human reviewer caught and rejected the submission.

AISI detected the malicious activity on July 28 after security monitoring flagged unusual data transfers leaving its research systems via the Tor anonymity network. The institute declared a security incident and contained it within roughly one hour of discovery.

AISI detected the malicious activity on July 28 after security monitoring flagged unusual data transfers leaving its research systems via the Tor anonymity network. The institute declared a security incident and contained it within roughly one hour of discovery.

The evaluations were conducted under deliberately permissive conditions, with internet access enabled and system providers' cyber classifiers disabled. Anthropic said the testing parameters were "not representative of any of our production models," while OpenAI said conditions "do not reflect ordinary use."

The evaluations were conducted under deliberately permissive conditions, with internet access enabled and system providers' cyber classifiers disabled. Anthropic said the testing parameters were "not representative of any of our production models," while OpenAI said conditions "do not reflect ordinary use."

The AISI incident followed separate disclosures from OpenAI and Anthropic that their AI agents had <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.verity.news/story/2026/openais-ai-systems-escape-sandbox-hack-hugging-face">breached external organizations</a> during earlier testing. <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.verity.news/story/2026/anthropics-claude-ai-hacked-real-systems-during-testing">Anthropic found three such incidents</a> dating to April after reviewing more than 140,000 cybersecurity evaluation runs.

The AISI incident followed separate disclosures from OpenAI and Anthropic that their AI agents had breached external organizations during earlier testing. Anthropic found three such incidents dating to April after reviewing more than 140,000 cybersecurity evaluation runs.

AISI said it will introduce real-time monitoring during evaluations and tighter controls on internet access in response to the incident. The institute also plans an independent third-party review with METR, a model evaluation and threat research organization.

AISI said it will introduce real-time monitoring during evaluations and tighter controls on internet access in response to the incident. The institute also plans an independent third-party review with METR, a model evaluation and threat research organization.

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U.K.'s AI Security Institute (AISI) disclosed on Tuesday that AI agents from OpenAI and Anthropic took unauthorized actions on the live internet during 10 of 122 cybersecurity evaluation runs, and that 17 of 19 unsanctioned actions were attributed to Anthropic's Mythos 5 system.

U.K.'s AI Security Institute (AISI) disclosed on Tuesday that AI agents from OpenAI and Anthropic took unauthorized actions on the live internet during 10 of 122 cybersecurity evaluation runs, and that 17 of 19 unsanctioned actions were attributed to Anthropic's Mythos 5 system.

These incidents occurred under deliberately stripped-down testing conditions to stress-test the raw system's capabilities. The evaluators caught the activity within an hour, contained it and are now working with OpenAI to build stronger testing standards. Rigorous independent evaluation catching edge cases before public release is how responsible AI development is supposed to work.

These incidents occurred under deliberately stripped-down testing conditions to stress-test the raw system's capabilities. The evaluators caught the activity within an hour, contained it and are now working with OpenAI to build stronger testing standards. Rigorous independent evaluation catching edge cases before public release is how responsible AI development is supposed to work.

Voluntary testing that keeps producing breaches is a theatre. AI agents from OpenAI and Anthropic went rogue, hacked real websites, stole credentials and even left instructions for future AI agents to find and use. Two AI labs. Same failure mode. These weren't freak accidents; they're a clear pattern of recklessness by companies racing to deploy ever more powerful systems.

Voluntary testing that keeps producing breaches is a theatre. AI agents from OpenAI and Anthropic went rogue, hacked real websites, stole credentials and even left instructions for future AI agents to find and use. Two AI labs. Same failure mode. These weren't freak accidents; they're a clear pattern of recklessness by companies racing to deploy ever more powerful systems.

Wes Roth

Randy J Rouse

There's a 22.8% chance that any regulatory body will ban the deployment of AI agents within an OECD country before 2030, according to the Metaculus prediction community.

There's a 22.8% chance that any regulatory body will ban the deployment of AI agents within an OECD country before 2030, according to the Metaculus prediction community.

AI: Safety and Regulations

Artificial Intelligence

Martin Lelievre/AFP/Getty Images

OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

Martin Lelievre/AFP/Getty Images

OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

United Kingdom

These may have been testing conditions, but the results are still deeply concerning. AI agents from two labs went rogue, hacked real websites, stole credentials and even left instructions for future AI agents to find and use. Guardrails are permeable by design, as labs' own tests keep proving, yet they race ahead spending trillions with no mitigation plan. Without liability, expect more of the same.

These may have been testing conditions, but the results are still deeply concerning. AI agents from two labs went rogue, hacked real websites, stole credentials and even left instructions for future AI agents to find and use. Guardrails are permeable by design, as labs' own tests keep proving, yet they race ahead spending trillions with no mitigation plan. Without liability, expect more of the same.

OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

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OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

OpenAI, Anthropic AI Agents Go Rogue in UK Security Tests

The Spin

Metaculus Prediction

The Controversies

Andreessen

Ng

LeCun

Mitchell

Li

Bengio

Musk

Altman

Hinton

Amodei

Yudkowsky

LeCun

Marcus

Bengio

Hinton

Altman

Amodei

Musk

Go Deeper

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