Cybersecurity Dataset Fenrir V2.1: 99,870 Instruction-Tuning Triples for Defense
99,870 high-quality system, user, and assistant triples form a ready-to-train dataset for cybersecurity instruction tuning. Created by Alican Kiraz and last updated on April 22, 2026, it is licensed under Apache-2.0 for production use. The dataset's scope includes OWASP Top 10, MITRE ATT&CK, NIST CSF, CIS Controls, ASD Essential 8, modern authentication, SSL/TLS, cloud security, DevSecOps, cryptography, and AI security.