{"id":17778,"date":"2026-04-15T16:22:30","date_gmt":"2026-04-15T16:22:30","guid":{"rendered":"http:\/\/TheNextWeb=dcb296649ec70b924c6ddb189b1f2852"},"modified":"2026-04-15T16:22:30","modified_gmt":"2026-04-15T16:22:30","slug":"openai-opens-its-cybersecurity-model-to-thousands-of-defenders-in-race-with-anthropics-mythos","status":"publish","type":"post","link":"https:\/\/www.londonchiropracter.com\/?p=17778","title":{"rendered":"OpenAI opens its cybersecurity model to thousands of defenders in race with Anthropic\u2019s Mythos"},"content":{"rendered":"<p> <img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn0.tnwcdn.com\/wp-content\/blogs.dir\/1\/files\/2026\/04\/openai-gpt-5-4-cyber-trusted-access-defenders-mythos.png\" width=\"868\" height=\"488\"><\/p>\n<p>In short: OpenAI is releasing GPT-5.4-Cyber, a model fine-tuned for defensive cybersecurity with lowered refusal boundaries and binary reverse engineering capabilities, and scaling its Trusted Access for Cyber programme to thousands of verified defenders. The move comes a week after Anthropic restricted its more powerful Mythos model to just 11 organisations, setting up a philosophical [&hellip;]<\/p>\n<p><a href=\"https:\/\/thenextweb.com\/news\/openai-gpt-5-4-cyber-trusted-access-defenders-mythos?utm_source=social&#038;utm_medium=feed&#038;utm_campaign=profeed\">This story continues<\/a> at The Next Web <a href=\"https:\/\/thenextweb.com\/news\/openai-gpt-5-4-cyber-trusted-access-defenders-mythos\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In short: OpenAI is releasing GPT-5.4-Cyber, a model fine-tuned for defensive cybersecurity with lowered refusal boundaries and binary reverse engineering capabilities, and scaling its Trusted Access for Cyber programme to thousands of&#8230;<\/p>\n","protected":false},"author":1,"featured_media":17779,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts\/17778"}],"collection":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17778"}],"version-history":[{"count":0,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/posts\/17778\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=\/wp\/v2\/media\/17779"}],"wp:attachment":[{"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londonchiropracter.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}