This includes improving capabilities such as security reasoning, code and system understanding, planning, tool use, long-horizon investigation, and effective collaboration with human defenders, as well as applying these capabilities to vulnerability discovery, secure development, threat and anomaly detection, malware and attack analysis, incident investigation, security validation, and automated defense. Develop AI-powered capabilities for vulnerability discovery, secure development, threat detection, malware analysis, incident investigation, security validation, and automated defense that are robust to adversarial manipulation, uncertainty, distribution shift, and incomplete or noisy operational data.