{"id":141346,"date":"2026-08-16T08:18:12","date_gmt":"2026-08-16T08:18:12","guid":{"rendered":"https:\/\/www.europesays.com\/ai\/141346\/"},"modified":"2026-08-16T08:18:12","modified_gmt":"2026-08-16T08:18:12","slug":"anthropics-bio-weapons-filter-was-down-for-nearly-a-year-exposing-133-million-requests","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ai\/141346\/","title":{"rendered":"Anthropic&#8217;s bio-weapons filter was down for nearly a year, exposing 133 million requests"},"content":{"rendered":"<p>\t\t\t<a href=\"https:\/\/the-decoder.com\/author\/matthias-bastian\/\" class=\"w-6 h-6 relative rounded-full overflow-hidden shrink-0 bg-gray-400 block   exclude-from-pdf\" title=\"View all posts by Matthias Bastian\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n\t\t\t\t<img loading=\"lazy\" alt=\"Matthias Bastian\" src=\"https:\/\/www.europesays.com\/ai\/wp-content\/uploads\/2026\/04\/avatar_matthias_bastian.jpg\"  class=\"avatar avatar-24 photo w-6 h-6 left-0 top-0 absolute\" height=\"24\" width=\"24\" decoding=\"async\"\/>\t\t\t<\/a><\/p>\n<p>From the company whose CEO <a href=\"https:\/\/the-decoder.com\/anthropic-ceo-amodei-doubles-down-on-open-weight-risk-stance-while-insisting-he-never-called-for-a-ban\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">calls AI-assisted development of chemical and biological weapons a bigger threat than cyberattacks<\/a> comes a <a href=\"https:\/\/www-cdn.anthropic.com\/f61d49fa5596956a5dec75fea0e973bf6a6a8378\/Redacted%20Risk%20Report%20August%202026%20.pdf\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">safety report<\/a> revealing that Anthropic&#8217;s blocking biological classifiers were inactive from May 2025 through April 2026. These filters are designed to prevent AI models from being used to extract dangerous knowledge about chemical or biological weapons. For almost a year, all traffic from external contractors providing human feedback ran without them.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-39105 size-full\" src=\"https:\/\/www.europesays.com\/ai\/wp-content\/uploads\/2026\/08\/anthropic_bio_safety_fail.png\" alt=\"\" width=\"1468\" height=\"427\"\/>Screenshot<\/p>\n<p>The gap affected a pool of about 50,000 people who ran roughly 133 million chats with the models. According to Anthropic, these individuals were vetted only by external vendors whose screening processes were often insufficient. Anthropic says its internal investigation turned up no evidence of actual misuse. The company has since tightened contractor requirements.<\/p>\n<p>Anthropic also <a href=\"https:\/\/the-decoder.de\/fable-5-darf-wieder-biologie-anthropic-lockert-uebereifrige-sicherheitsfilter-deutlich\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">recently loosened its classifiers on Fable 5<\/a> after researchers complained the filters were so aggressive they blocked legitimate research.<\/p>\n<p>\t\t\t\tAI News Without the Hype \u2013 Curated by Humans<\/p>\n<p>\n\t\t\t\t\tSubscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive &#8220;AI Radar&#8221; frontier report six times a year, full archive access, and access to our comment section.\t\t\t\t<\/p>\n<p>\t\t\t\t<a href=\"https:\/\/the-decoder.com\/subscription\/\" class=\"inline-block text-white bg-(--heise-primary) mt-3 hover:bg-blue-800 focus:ring-4 focus:outline-none focus:ring-blue-300 font-medium rounded-sm w-full sm:w-auto  pl-3 pr-3 py-2.5 text-center newsletter-submit-button hover:no-underline\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n\t\t\t\t\tSubscribe now\t\t\t\t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"From the company whose CEO calls AI-assisted development of chemical and biological weapons a bigger threat than cyberattacks&hellip;\n","protected":false},"author":2,"featured_media":133141,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[53,15874],"class_list":["post-141346","post","type-post","status-publish","format-standard","has-post-thumbnail","category-anthropic","tag-anthropic","tag-bioinformatics"],"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts\/141346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/comments?post=141346"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/posts\/141346\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/media\/133141"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/media?parent=141346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/categories?post=141346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ai\/wp-json\/wp\/v2\/tags?post=141346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}