Postcards From Las Vegas – BlackHat USA 2026 and Defcon 34

This is a conference summary of BlackHat USA 2026 and DEF CON 34 highlighting a strong theme of AI/agent security, talks on agent-enabled exploitation (including an OpenAI–Hugging Face incident reconstruction), LLM-assisted vulnerability discovery for IoT/firmware, fine-tuned OSS agent exploitation methods, and multiple practical exploit presentations (including USB video kernel exploitation and mobile logic bug chains). The report cites slides, code repositories, and specific CVEs discussed during the presentations.