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Anthropic proposes Cyber Jailbreak Severity scale with industry partners

Anthropic, in collaboration with partners like Amazon, Microsoft, and Google, has released a draft framework called the Cyber Jailbreak Severity (CJS) scale. This scale, inspired by the Common Vulnerability Scoring System (CVSS), aims to standardize the evaluation of AI jailbreaks by scoring them across four axes: capability gain, breadth, ease of weaponization, and discoverability. The framework is intended to provide a shared vocabulary for AI developers and governments to discuss and respond to jailbreak incidents, particularly in light of potential regulatory actions and reporting requirements. AI

IMPACT Establishes a potential industry standard for evaluating AI safety risks, influencing future model development and regulatory responses.

RANK_REASON The item describes a draft framework for evaluating AI jailbreaks, developed by a major AI lab and its partners, drawing parallels to existing security scoring systems. [lever_c_demoted from research: ic=1 ai=1.0]

Read on dev.to — LLM tag →

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Anthropic proposes Cyber Jailbreak Severity scale with industry partners

COVERAGE [1]

  1. dev.to — LLM tag TIER_1 English(EN) · Manu Shukla ·

    CJS-0 to CJS-4: a triage runbook for the 2026 jailbreak severity scale

    <h1> CJS-0 to CJS-4: a triage runbook for the 2026 jailbreak severity scale </h1> <p><strong>Summary.</strong> On 2 July 2026 Anthropic published a draft Cyber Jailbreak Severity framework, developed with its Glasswing partners including Amazon, Microsoft and Google. It scores an…