Anthropic adds real-time cybersecurity filtering to Opus and Sonnet

Anthropic is deploying a new protection layer across Claude Opus and Sonnet. It automatically detects and blocks prompts that violate the Usage Policy regarding high-risk cybersecurity activities.

The filters target two categories of activity, including direct violations like ransomware development and mass data scraping. Some tasks fall under dual-use, where legitimate security research overlaps with potentially harmful actions.

For these cases, Anthropic has launched a free Cyber Verification Program. Users submit requests via the Cyber Use Case Form, with a two-business-day turnaround for approval. The program covers Claude.ai, Claude Code, the API, and Microsoft Foundry, but is unavailable on Amazon Bedrock, Google Vertex AI, or accounts with Zero Data Retention.