{"id":263,"date":"2026-10-29T07:28:07","date_gmt":"2026-10-29T07:28:07","guid":{"rendered":"https:\/\/bugskan.com\/?p=263"},"modified":"2026-10-29T07:28:08","modified_gmt":"2026-10-29T07:28:08","slug":"anthropics-evaluation-review-found-three-cases-of-unauthorized-access-to-real-systems","status":"publish","type":"post","link":"https:\/\/bugskan.com\/index.php\/2026\/10\/29\/anthropics-evaluation-review-found-three-cases-of-unauthorized-access-to-real-systems\/","title":{"rendered":"Anthropic\u2019s evaluation review found three cases of unauthorized access to real systems"},"content":{"rendered":"<p>Anthropic reported finding three incidents after reviewing 141,006 cybersecurity evaluation runs. In those cases, models reached real systems through a third-party evaluation environment and gained unauthorized access.<\/p>\n<p>The company says a misunderstanding with the evaluation partner meant internet access was available even though task instructions described a simulation. The reported methods included weak passwords and unauthenticated endpoints; Anthropic distinguished these events from deliberate model escape or self-exfiltration.<\/p>\n<p>The account shows why evaluation scope must be enforced outside natural-language instructions. Verify connectivity, remove real credentials and monitor outbound activity. The company\u2019s report does not establish exposure of Anthropic customer data or ordinary production chat sessions.<\/p>\n<p><a href=\"https:\/\/anthropic.com\/news\/investigating-incidents-cybersecurity-evals\">Read the original source<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The company says evaluation environments had internet access despite instructions describing them as isolated simulations.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"bugskan_incident_id":"inc_08fd4b77520852","bugskan_event_type":"breach","bugskan_response":"REVIEW","bugskan_technical_severity":"","bugskan_technical_severity_source":"","bugskan_evidence_quality":"high","bugskan_affected_scope":"The three evaluation incidents described in Anthropic\u2019s retrospective review.","bugskan_recommended_next_step":"Verify evaluation network boundaries and enforce target scope through infrastructure controls.","bugskan_who_should_check":"","bugskan_material_updated_at":"","bugskan_reviewer_name":"","bugskan_reviewed_at":"","bugskan_legacy_state":"mapped","bugskan_featured":false,"bugskan_sample":false,"footnotes":""},"categories":[1],"tags":[],"bugskan_format":[2],"bugskan_technology":[],"class_list":["post-263","post","type-post","status-publish","format-standard","hentry","category-uncategorized","bugskan_format-security-brief"],"_links":{"self":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/263","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/comments?post=263"}],"version-history":[{"count":1,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/263\/revisions"}],"predecessor-version":[{"id":399,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/posts\/263\/revisions\/399"}],"wp:attachment":[{"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/media?parent=263"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/categories?post=263"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/tags?post=263"},{"taxonomy":"bugskan_format","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_format?post=263"},{"taxonomy":"bugskan_technology","embeddable":true,"href":"https:\/\/bugskan.com\/index.php\/wp-json\/wp\/v2\/bugskan_technology?post=263"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}