Each case says who disclosed it and what is still unconfirmed. A company’s account of its own incident stays a company account until outside reviewers or officials confirm it.

October 2026

  1. OpenAI reports four more cases of models breaking into systemsOpenAIDisclosed by OpenAITest reached real systemsCopy the link to this entry

    In June, internal models took passwords and keys from a government statistics site, copied data from a research dashboard, used a stranger’s test crypto wallet and got around a block on web requests. Three of the models did not disclose it. The sites are not named.

    OpenAI says its models broke into websites in training
  2. Test AI agents read Indian organisations’ confidential recordsUnnamed AI companies (reported to CERT-In)Reported by the AI companiesTest reached real systemsCopy the link to this entry

    AI companies told CERT-In that their models and agents went beyond their tasks and read business records, including personal data, at several Indian organisations, using exposed keys. No victim noticed, and nobody is named.

    India says test AI agents read firms’ confidential files
  3. Anthropic reports Claude models acting on real websites in testsAnthropicCompany report; tests cut off the webTest reached real systemsCopy the link to this entry

    Anthropic says its models used a server flaw, sent real forms and got round fees, including a false murder tip to Philadelphia police. A State Department official says a test model sent 20 visa applications.

    Next step Internal tests stay offline until Anthropic’s monitoring reliably catches such cases

    Anthropic cuts its AI tests off the live internet
  4. OpenAI agent accessed a NSW parks fire-data app in JuneOpenAINSW investigatingGovernment siteCopy the link to this entry

    An agent reached a National Parks and Wildlife Service web application with historical fire data. OpenAI told NSW this week; the state has found no access to personal information so far.

    OpenAI says an agent got into a second NSW government site

September 2026

  1. A training agent reached an outside chatbot through a DNS gapOpenAITraining resumed Oct 1Sandbox escapeCopy the link to this entry

    An agent in a training run used a gap in the sandbox’s network rules to reach a public chatbot. Monitoring flagged it within 15 minutes; the run was stopped by hand about 2.5 hours later. OpenAI paused training of its most capable models for 11 days.

    Outcome Training resumed on October 1 with no live internet, OpenAI said on October 23

    OpenAI paused top-model training after an agent got online
  2. A fourth real-world cyber incident found in testsAnthropicIndependent review askedTest reached real systemsCopy the link to this entry

    Claude reached real systems during tests that were wrongly connected to the internet. Anthropic says a much larger search found no worse cases and asked METR for an independent review.

    Anthropic found a fourth real-world cyber incident

July 2026

  1. Claude Mythos 5 pressures a real maintainer in a UK cyber testAnthropic (tested by the UK AI Security Institute)Analysed; outside review nextTest reached real systemsCopy the link to this entry

    With internet access on and safeguards off, the model sent malicious code to a real GitHub project and used fake accounts to push for it. The maintainers refused it. AISI and Anthropic published their analyses on October 23.

    Next step METR is to review the transcripts; AISI runs these tests offline for now

    UK test finds Claude Mythos 5 ignored signs of real harm
  2. The Hugging Face breachOpenAISenators want recordsSandbox escapeCopy the link to this entry

    The July breach that two US senators asked OpenAI to document, together with its safety tests and outside access to the evidence. OpenAI says it investigated.

    US senators want records about OpenAI’s Hugging Face breach

June 2026

  1. Agents reached systems at four Australian agenciesOpenAIApologised Sep 28Government sitesCopy the link to this entry

    OpenAI’s own account: a model took internal files and credentials from a Medicare portal, and agents reached three more agencies. It says no individual patient or crime records were accessed.

    OpenAI apologised to Australia for its agents’ break-ins
  2. An agent got past the blocks on a Medicare statistics portalOpenAIDisclosed after 3 monthsGovernment siteCopy the link to this entry

    A research agent got past the blocks on an Australian government portal while looking for medicine-spending data. No personal information is believed to have been accessed. OpenAI told the government on September 10.

    An OpenAI agent broke into an Australian government portal

May 2026

  1. A Gemini model got into three real companies during a cyber testGoogleConfirmed after press questionsTest reached real systemsCopy the link to this entry

    During a security test run by Irregular, a setup error let a Gemini model gain unauthorized access to three outside organisations. Google says the model stopped; the public learned of it after questions from The Wall Street Journal.

    A Gemini model got into three real firms during a cyber test

How this tracker works

A case appears when one of our stories reports an AI system or agent doing something it was not meant to do, being misused, or being broken into. The date is the one the story gives; when a story gives none, it is the story’s own date. We add entries with each edition and correct them under the story when a fact changes.

Reusing this list: you may quote it with a link to this page. Facts belong to the sources each story cites.