{"id":3637,"date":"2026-07-26T12:14:13","date_gmt":"2026-07-26T12:14:13","guid":{"rendered":"https:\/\/justfineinfotech.com\/cybersecurity-researchers-arent-happy-about-the-guardrails-on-anthropics-fable-techcrunch\/"},"modified":"2026-07-26T12:14:13","modified_gmt":"2026-07-26T12:14:13","slug":"cybersecurity-researchers-arent-happy-about-the-guardrails-on-anthropics-fable-techcrunch","status":"publish","type":"post","link":"https:\/\/justfineinfotech.com\/fr\/cybersecurity-researchers-arent-happy-about-the-guardrails-on-anthropics-fable-techcrunch\/","title":{"rendered":"Cybersecurity researchers aren&#8217;t happy about the guardrails on Anthropic&#8217;s Fable | TechCrunch"},"content":{"rendered":"<p>Anthropic released its latest model Fable on Tuesday, billing it as a public and limited version of its powerful and much-hyped cybersecurity model Mythos<\/p>\n<p>But not everyone is happy with the restrictions, and <a href=\"https:\/\/x.com\/Behi_Sec\" rel=\"nofollow noopener\" target=\"_blank\">a number<\/a> of <a href=\"https:\/\/x.com\/zeroxjf\/status\/2064400152178389307\" rel=\"nofollow noopener\" target=\"_blank\">cybersecurity<\/a><a href=\"https:\/\/x.com\/alexjplaskett\/status\/2064594731137409128\" rel=\"nofollow noopener\" target=\"_blank\">researchers<\/a> and <a href=\"https:\/\/x.com\/mehulmpt\/status\/2064449391969374238\" rel=\"nofollow noopener\" target=\"_blank\">professionals<\/a><a href=\"https:\/\/www.reddit.com\/r\/ClaudeCode\/comments\/1u1rvn3\/fable_refusing_every_request_related_to\/\" rel=\"nofollow noopener\" target=\"_blank\">have aired<\/a><a href=\"https:\/\/www.reddit.com\/r\/ClaudeAI\/comments\/1u1o50u\/had_fable_5_run_an_indepth_cybersecurity_audit_of\/\" rel=\"nofollow noopener\" target=\"_blank\">complaints<\/a> online.\u00a0<\/p>\n<p>\u201c[Fable] rejects any request that could be tangentially cyber related. Even innocuous tasks like reading a blog post,\u201d <a href=\"https:\/\/x.com\/chompie1337\/status\/2064431038554939507\" rel=\"nofollow noopener\" target=\"_blank\">said<\/a> Valentina \u201cChompie\u201d Palmiotti, a well-known security researcher who works at IBM X-Force.\u00a0<\/p>\n<p>When a prompt triggers its guardrails, Fable pauses the chat and says that its \u201csafety measures flagged this message for cybersecurity or biology topics.\u201d<\/p>\n<p>The guardrails were put in place to limit the risk that Fable could be used to develop malware or compromise software \u2014 a long-standing concern within Anthropic. The restrictions on biology come from a similar concern around developing biological weapons<\/p>\n<p>When the AI giant released Mythos in April, it restricted the model to a limited number of companies and organizations in what it called Project Glasswing, an effort to deploy the model to secure critical software and infrastructure. Last week, Anthropic expanded access to Mythos to hundreds of organizations in 15 countries.\u00a0<\/p>\n<p>But despite the good intentions, many cybersecurity experts are still put off by the haphazard nature of the restrictions. Matt Suiche, a cybersecurity veteran, told TechCrunch that \u201cif you ask it to write secure code, it assumes it is cybersecurity related work instead of software engineering best practices, and you get downgraded.\u201d Fable is programmed to fall <a href=\"https:\/\/justfineinfotech.com\/how-ai-drove-shopify-back-to-clean-code\/\" title=\"How AI drove Shopify back to clean code\">back<\/a> to Claude Opus 4.8 if it hits a guardrail. \u201cIt seems to be keyword based, so anything in the lexical field of \u2018cybersecurity\u2019 triggers the guardrails.\u201d<\/p>\n<h4>Contact Us<\/h4>\n<p>\t\t\tDo you have more information about how hackers are using AI? Or how cybersecuity companies are using AI? We\u2019d love to hear from you. From a non-work device and network, you can contact Lorenzo Franceschi-Bicchierai securely on Signal at +1 917 257 1382, or via Telegram and Keybase @lorenzofb, or email.<\/p>\n<p>\u201cBut it is understandable as we are still in the early days and they are still adapting their guardrails. I am sure they are going to evolve over time as Anthropic and other frontier model companies will collaborate more with the current new generation of cybersecurity companies,\u201d said Suiche, who is a member of the technical staff at Tolmo, an AI cybersecurity startup. \u201cIt\u2019s better to catch more people than not enough when you do such a release and to relax the guardrails over time.\u201d<\/p>\n<p>Another researcher <a href=\"https:\/\/x.com\/evilsocket\/status\/2064694653765451925\" rel=\"nofollow noopener\" target=\"_blank\">griped<\/a> on X that \u201ceven asking for a code review\u201d triggers Fable\u2019s guardrails.\u00a0<\/p>\n<p>Anthropic did not immediately respond to a request for comment<\/p>\n<p>Apart from guardrails inside its models, Anthropic requires cybersecurity professionals to apply to the Cyber Verification Program. If they get approved, the applicants have fewer limitations on using Claude for cybersecurity work. OpenAI has a similar program called Trusted Access for Cyber<\/p>\n<div style=\"clear:both;margin:30px 0 15px 0\">\n<p>\n    <strong>Related:<\/strong><br \/>\n    &lt;a href=&quot;https:\/\/yoursite.com\/<a href=\"https:\/\/justfineinfotech.com\/meta-gives-ai-assistant-new-task-automation-features\/\" title=\"Meta Gives AI Assistant New Task Automation Features\u00a0\">automation<\/a>-training-benin\/&#8221; title=&#8221;Digital Automation Training Benin: 5 Winning Skills Employers Demand in 2026&#8243;&gt;<br \/>\n      Digital Automation Training Benin: 5 Winning Skills Employers Demand in 2026<br \/>\n    <\/a>\n  <\/p>\n<p>\n    &lt;a href=&quot;https:\/\/yoursite.com\/automation-africa\/&quot; title=&quot;<a href=\"https:\/\/justfineinfotech.com\/bmc-to-launch-whatsapp-business-and-google-messages-for-property-taxpayers\/\" title=\"BMC to launch WhatsApp Business and Google Messages for property taxpayers\">WhatsApp<\/a> Marketing Automation Africa: 6 Dangerous Mistakes Brands Make in Nigeria&#8221;&gt;<br \/>\n      WhatsApp Marketing Automation Africa: 6 Dangerous Mistakes Brands Make in Nigeria<br \/>\n    <\/a>\n  <\/p>\n<\/div>\n<div style=\"clear:both;margin:30px 0;padding:25px;background:#f8f9fc;border:1px solid #ddd;border-radius:8px;text-align:center\">\n<h3>Want to learn this practically?<\/h3>\n<p>Join <strong>Justfine Infotech<\/strong> and build real digital skills in AI, automation, web development, digital marketing, office productivity, e-commerce, freelancing and cybersecurity.<\/p>\n<p><strong>Available Programmes:<\/strong><br \/>\n  6 Weeks Certificate \u2022 3 Months Professional Certificate \u2022 6 Months Diploma \u2022 Full Professional Diploma<\/p>\n<p><strong>WhatsApp:<\/strong><br \/>\n  +229 01 57 57 99 15<br \/>\n  +229 01 66 68 11 60<\/p>\n<p><a href=\"https:\/\/api.whatsapp.com\/send?phone=2348132690270&amp;text=Hello\" target=\"_blank\" rel=\"noopener\">Enroll Now<\/a><\/p>\n<\/div>\n<p class=\"ani-source\">Source: <a href=\"https:\/\/techcrunch.com\/2026\/06\/10\/cybersecurity-researchers-arent-happy-about-the-guardrails-on-anthropics-fable\/\" target=\"_blank\" rel=\"nofollow noopener\">techcrunch.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anthropic released its latest model Fable on Tuesday, billing it as a public and limited version of its powerful and much-hyped cybersecurity model Mythos<\/p>","protected":false},"author":1,"featured_media":3639,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[71],"tags":[267,842,795,843,841],"class_list":["post-3637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cybersecurity-online-scam-alerts","tag-about","tag-arent","tag-cybersecurity","tag-happy","tag-researchers"],"_links":{"self":[{"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/posts\/3637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/comments?post=3637"}],"version-history":[{"count":1,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/posts\/3637\/revisions"}],"predecessor-version":[{"id":3638,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/posts\/3637\/revisions\/3638"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/media\/3639"}],"wp:attachment":[{"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/media?parent=3637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/categories?post=3637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/justfineinfotech.com\/fr\/wp-json\/wp\/v2\/tags?post=3637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}