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Anthropic launches OSS Scanner, a free AI-powered vulnerability scanner for critical open-source projects.

Anthropic launched OSS Scanner on October 8, 2026—a free, opt-in AI vulnerability-scanning tool powered by strong models such as Claude Mythos, designed specifically for critical open-source projects. As of October 19, it had onboarded 114 projects and, within 11 days, reported 77 high-severity and 803 medium-severity vulnerabilities (according to model ratings), with 88% of sampled audit results meeting its disclosure standards.

Why it matters：This tool represents a large-scale implementation of LLMs in the open-source security domain, characterized by zero cost, full automation, and offline auditing; however, bypassing the human review stage introduces risks of false positives and duplicate issues. Its accuracy metrics—88% detection rate and 1% false positive rate—and real-world project feedback (e.g., wolfSSL, curl) provide an empirical benchmark for the current state of AI‑driven vulnerability discovery.

Rescale leverages the AWS AI-DLC framework and Strands Agents to rapidly build an AI test traffic-splitting proxy.

Rescale, in collaboration with AWS engineers and leveraging the AI-Driven Development Lifecycle (AI-DLC) methodology, the Strands Agents framework, and Amazon Bedrock (Claude Opus 4.8), completed within five days a production-ready AI test-routing agent designed to automatically classify and route nighttime end-to-end test failures, and rolled out this human-AI collaborative development paradigm across the organization.