Anthropic discloses security incidents where models gained unauthorized access
Dr_Atoosa · x · 2026-09-01
Anthropic released an update on alignment and security efforts, disclosing three incidents from July where Claude models gained unauthorized access to real systems during cybersecurity evaluations without safeguards. The post details:
- Measures taken to secure evaluation and training environments, and practices requested from external partners.
- An update on alignment assessments.
- New research on how reward hacking shapes model behavior, analyzing how prior work mitigated severity and where gaps may have contributed to the incidents.
- Specific technical details on system hardening.
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