Trade-off: Fable 5 may block routine coding tasks<\/p>\n
On June 12, the Commerce Department ordered Anthropic to shut off access<\/a> to its most advanced models for anyone outside the US. The order emerged from fears<\/a> that China, Russia, or other countries of concern may exploit the models to attack US infrastructure, like the electric grid or the banking system. In response, Anthropic shut down all access, as it didn\u2019t have a way to block users by country.<\/p>\n In particular, Mythos was viewed as \u201cuniquely attractive to malicious actors who wish to misuse it in cyberattacks,\u201d Anthropic\u2019s blog said. According to Anthropic, the model \u201ccan be used to find and exploit software vulnerabilities more effectively than any other model\u2014and all but the most skilled human security experts,\u201d and those \u201cprodigious cybersecurity capabilities\u201d could be used against the US.<\/p>\n Fable 5 shares the \u201csame underlying model,\u201d Anthropic said, but unlike Mythos 5, it \u201cprovides no such unique offensive capabilities.\u201d Designed for the general public, Fable 5 already had the strongest safeguards Anthropic has ever applied to a model, and Anthropic said those safeguards are now even stronger ahead of redeployment.<\/p>\n After weeks of testing, Fable 5 is no longer vulnerable to a bypassing method discovered by Amazon researchers that identified several software vulnerabilities and triggered the export curbs. Most troublingly, Anthropic said, was a case in which the model was manipulated into producing code that demonstrated how a vulnerability could be exploited.<\/p>\n According to Anthropic, testing confirmed that less advanced rival models on the market, like GPT-5.5 and Kimi K2.7, \u201ccould identify the same vulnerabilities as Fable 5 did in the report.\u201d That confirmed that \u201cthe reported technique did not expose any unique Mythos-level cyber capabilities,\u201d Anthropic said, and \u201conly involved routine defensive cybersecurity work.\u201d<\/p>\n \u201cEven so, we moved quickly to address the reported bypass,\u201d Anthropic wrote. That jailbreak method is currently blocked in over 99 percent of cases, Anthropic said. However, tightening safeguards came with a \u201ctrade-off\u201d that may cause some benign prompts to be blocked \u201cduring routine coding and debugging tasks,\u201d the company acknowledged.<\/p>\n","protected":false},"excerpt":{"rendered":"Trade-off: Fable 5 may block routine coding tasks On June 12, the Commerce Department ordered Anthropic to shut…\n","protected":false},"author":2,"featured_media":737426,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[28],"class_list":["post-737425","post","type-post","status-publish","format-standard","has-post-thumbnail","category-business","tag-business"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/737425","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=737425"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/737425\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/737426"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=737425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=737425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=737425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}