A researcher demonstrated a proof-of-concept attack chain that provided C2-style influence over ChatGPT's isolated sandbox at Black Hat USA 2026.

Signal has introduced Automatic Key Verification, a new security feature that gives users a new way to ensure their encrypted chats haven't been intercepted.

OpenAI has developed a new model called "GPT 5.6 Cyber," designed for vulnerability research, penetration testing, incident ...

Python implementation of Diffie-Hellman key exchange using X25519 and HKDF key derivation, for educational purposes only. Note: this demo has no authentication and is vulnerable to man-in-the-middle ...