In this week's Seclog, the cybersecurity landscape presents a multifaceted view, encompassing critical cloud vulnerabilities, practical mobile security techniques, and a retrospective on digital communication's origins. A notable concern emerged from Cloudflare's ACME validation logic, where a reported vulnerability enabled WAF feature bypasses on specific paths, highlighting the intricate nature of modern web defenses. The inherent risks of advanced AI systems are also brought to light by an arbitrary file read bug discovered in Anthropic's Claude Code agent, underscoring the need for robust security in AI integrations. For practitioners, a comprehensive guide on dynamically intercepting OkHttp traffic using Frida offers invaluable techniques for mobile application penetration testing. Complementing these technical insights, resources like the 39th Chaos Communication Congress archive and a directory for European digital service alternatives support continuous learning and data sovereignty initiatives. Lastly, a historical exploration of 1980s Bulletin Board Systems provides foundational context for understanding the evolution of internet security.