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Exclusive: OpenAI, Anthropic meet with House Homeland Security behind closed doors on cyber threats

Axios · · 726 words · By Sam Sabin; Ashley Gold
AI National Security Risks US-China AI Competition Government Regulation of AI

OpenAI and Anthropic provided classified briefings to the House Homeland Security Committee regarding the cybersecurity risks associated with their latest AI models. The article also details a separate briefing on 'jailbroken' models and the resulting calls from lawmakers for increased regulation to ensure public safety.

open_in_new Read the original article: https://axios.com/2026/04/28/openai-anthropic-congress-cyber-briefings

analyticsAnalysis

30%
Propaganda Score
confidence: 90%
Minor concerns. Some persuasive language detected, but largely factual.

psychologyDetected Techniques

warning
Loaded Language 70% confidence
Using words with strong emotional connotations to influence an audience.
warning
Appeal to Fear 80% confidence
Building support by instilling anxiety or panic in the audience.

fact_checkFact-Check Results

12 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 6
info Single Source 3
schedule Pending 2
help Insufficient Evidence 1
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“OpenAI and Anthropic briefed House Homeland Security Committee staff on their new cyber-capable AI models and their implications for cybersecurity”
CORROBORATED
Multiple web search results confirm that OpenAI and Anthropic briefed the House Homeland Security Committee on new AI models and cyber threats.
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wikipedia NEUTRAL — Peter Brian Hegseth (born June 6, 1980) is an American government official and former television personality who has served since 2025 as the 29th United States secretary of defense. Hegseth studied p…
https://en.wikipedia.org/wiki/Pete_Hegseth
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wikipedia NEUTRAL — The following is a list of events of the year 2026 in the United States, as well as predicted and scheduled events that have not yet occurred. July 4, 2026, will be the 250th anniversary of the signin…
https://en.wikipedia.org/wiki/2026_in_the_United_States
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wikipedia NEUTRAL — Since January 2026, the United States Department of Defense has conflicted with the artificial intelligence company Anthropic over the use of its products for military purposes.
https://en.wikipedia.org/wiki/Anthropic–United_States_Depart…
+ 3 more evidence sources
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“Anthropic has held off on a public release of its Mythos Preview model due to its ability to quickly find and exploit critical security flaws.”
CORROBORATED
Three independent web search results confirm Anthropic delayed the public release of the Mythos Preview model due to its ability to find and exploit security flaws.
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wikipedia NEUTRAL — The following is a list of events of the year 2026 in artificial intelligence, as well as predicted and scheduled events that have not yet occurred.
https://en.wikipedia.org/wiki/2026_in_artificial_intelligenc…
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wikipedia NEUTRAL — Claude is a series of large language models developed by Anthropic and first released in 2023. Since Claude 3, each generation has typically been released in three sizes, from least to most capable: H…
https://en.wikipedia.org/wiki/Claude_(language_model)
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wikipedia NEUTRAL — GPT-5.5 (Generative Pre-trained Transformer 5.5) is a large language model (LLM) released by OpenAI on April 23, 2026. The model is also known by its codename "Spud". OpenAI reports improvements on be…
https://en.wikipedia.org/wiki/GPT-5.5
+ 3 more evidence sources
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“OpenAI decided on a tiered approach for releasing its GPT-5.4-Cyber model.”
CORROBORATED
Web search results confirm the release of GPT-5.4-Cyber and that it is being rolled out in a limited, iterative manner to vetted vendors and researchers (a tiered approach).
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web search NEUTRAL — On April 15, OpenAI released GPT-5.4-Cyber. Exactly seven days after Anthropic restricted Claude Mythos to roughly 40 organizations under Project Glasswing. The timing isn’t subtle.
https://onemetrik.com/market-insights/gpt-54-cyber/
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web search NEUTRAL — Today, we’re releasing GPT‑5.4 in ChatGPT (as GPT‑5.4 Thinking), the API, and Codex. It’s our most capable and efficient frontier model for professional work.
https://openai.com/index/introducing-gpt-5-4/
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web search NEUTRAL — Customers in the highest tier will get access to the new cybersecurity-focused GPT-5.4-Cyber model. For now, OpenAI said GPT-5.4-Cyber will roll out in a limited and iterative manner to vetted securit…
https://www.neowin.net/news/openai-challenges-anthropics-str…
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“Both companies are working with federal agencies to get them access to the models.”
CORROBORATED
Multiple sources confirm both companies are providing AI access to federal agencies, including offering chatbots at $1 per year and creating models tailored for government employees.
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wikipedia NEUTRAL — Anthropic is an American artificial intelligence (AI) company headquartered in San Francisco. It has developed a range of large language models (LLMs) named Claude and focuses on AI safety. Anthropic …
https://en.wikipedia.org/wiki/Anthropic
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wikipedia NEUTRAL — Claude is a series of large language models developed by Anthropic and first released in 2023. Since Claude 3, each generation has typically been released in three sizes, from least to most capable: H…
https://en.wikipedia.org/wiki/Claude_(language_model)
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wikipedia NEUTRAL — OpenAI Global, LLC is an American artificial intelligence (AI) research organization consisting of a for-profit public benefit corporation (PBC) and a nonprofit foundation, headquartered in San Franci…
https://en.wikipedia.org/wiki/OpenAI
+ 3 more evidence sources
info
“OpenAI and Anthropic briefed staffers on Thursday in two separate classified briefings”
SINGLE SOURCE
While the briefings are corroborated in claim 0, the specific detail about 'two separate classified briefings on Thursday' is not explicitly detailed across multiple independent sources in the provided evidence; the provided evidence for this specific claim is generic company/person info.
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wikipedia NEUTRAL — The following is a list of events of the year 2026 in the United States, as well as predicted and scheduled events that have not yet occurred. July 4, 2026, will be the 250th anniversary of the signin…
https://en.wikipedia.org/wiki/2026_in_the_United_States
menu_book
wikipedia NEUTRAL — Since January 2026, the United States Department of Defense has conflicted with the artificial intelligence company Anthropic over the use of its products for military purposes.
https://en.wikipedia.org/wiki/Anthropic–United_States_Depart…
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wikipedia NEUTRAL — Peter Brian Hegseth (born June 6, 1980) is an American government official and former television personality who has served since 2025 as the 29th United States secretary of defense. Hegseth studied p…
https://en.wikipedia.org/wiki/Pete_Hegseth
+ 3 more evidence sources
info
“The briefings also touched on a recent White House memo accusing China of "industrial-scale" campaigns to distill and copy American AI models”
SINGLE SOURCE
The search results for this claim returned definitions of the color 'white' and are completely irrelevant to the claim about a White House memo on China.
travel_explore
web search NEUTRAL — White objects fully (or almost fully) reflect and scatter all the visible wavelengths of light. White on television and computer screens is created by a mixture of red, blue, and green light. The colo…
https://en.wikipedia.org/wiki/White
travel_explore
web search NEUTRAL — The meaning of WHITE is having the color of new snow or milk; specifically : of the color white. How to use white in a sentence.
https://www.merriam-webster.com/dictionary/white
travel_explore
web search NEUTRAL — WHITE definition: of the color of pure snow, of the margins of this page, etc.; reflecting nearly all the rays of sunlight or a similar light. See examples of white used in a sentence.
https://www.dictionary.com/browse/white
info
“OpenAI said the briefing was one of several the company held with Senate and House committees last week — in addition to a briefing with the White House.”
SINGLE SOURCE
The search results for this claim are about an 'Impact Investment Group' in Australia and are completely irrelevant to OpenAI's briefings.
travel_explore
web search NEUTRAL — About Us Impact Investment Group is a leading Australian impact investment funds manager. We want to prove that finance can be a force for good. That finance can be great for people and great for the …
https://www.impact-group.com.au/about/
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web search NEUTRAL — Contact Us enquiries@impact-group.com.au +61 3 8534 8060 Impact Investment Group’s head office is on the traditional lands of the Boon Wurrung people, part of the Kulin nation. We acknowledge their el…
https://www.impact-group.com.au/contact-us/
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web search NEUTRAL — Impact Investment Group is a leading Australian Impact Funds Manager, with investments in Renewable Energy, and Green Real Estate.
https://www.impact-group.com.au/
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“House Homeland Security Chair Andrew Garbarino (R-N.Y.) has been hosting ongoing private roundtables with tech and AI executives”
CORROBORATED
Two separate web search results confirm that House Homeland Security Chair Andrew Garbarino has been hosting private roundtables with tech and AI executives.
travel_explore
web search NEUTRAL — The big picture: House Homeland Security Chair Andrew Garbarino (R-N.Y.) has been hosting ongoing private roundtables with tech and AI executives, according to the Washington Post, and has been discus…
https://www.axios.com/2026/04/28/openai-anthropic-congress-c…
travel_explore
web search NEUTRAL — Andrew Reed Garbarino is an American attorney and politician serving as the U.S. representative for New York's 2nd congressional district since 2021. A member of the Republican Party, he served as the…
https://en.wikipedia.org/wiki/Andrew_Garbarino
travel_explore
web search NEUTRAL — House Homeland Security Chair Andrew Garbarino has been holding private roundtables with tech and AI leaders, the report mentioned, adding that the committee has also held multiple hearings on generat…
https://www.aa.com.tr/en/americas/openai-anthropic-brief-us-…
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“Rep. Jay Obernolte (R-Calif.) who introduced a bill laying out a federal framework for AI this week.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding Rep. Jay Obernolte introducing an AI framework bill in April 2026.
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“The committee has also held several hearings on the implications of generative AI models on national security, including nation-state cyberattacks.”
CORROBORATED
Web search results mention that the committee has held multiple hearings on generative AI's national security risks, including state-sponsored cyberattacks.
schedule
“Members of the committee said another briefing last week, on jailbroken AI models... gave them new urgency on regulating AI.”
PENDING
schedule
“Members were shown ways such tools could be used to carry out a school shooting or a bombing.”
PENDING
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.