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.

SecMisc #

39th Chaos Communication Congress 2025 Archive - media.ccc.de

Provides access to a rich archive of talks and workshops from the 39th Chaos Communication Congress (39C3), held in December 2025. This resource is a significant repository for discussions on information technology, security, and the broader societal impacts of technological advancements. Security professionals can leverage this content for in-depth insights and diverse perspectives from the global cybersecurity community.

Discover European Alternatives for Digital Services - european-alternatives.eu

Offers a curated directory to locate European alternatives for various digital services and products, including cloud services and SaaS platforms. This resource directly supports organizations aiming for data sovereignty and compliance, particularly within the EU regulatory framework. For security teams, it provides actionable options to enhance control over data residency and adhere to stringent regional privacy regulations like GDPR.

📰 SecLinks #

Cloudflare WAF Bypass in ACME Logic - blog.cloudflare.com

Details a critical vulnerability found in Cloudflare's ACME validation logic that allowed WAF features to be disabled on specific ACME-related paths. This flaw could lead to bypasses of Cloudflare's security protections for requests targeting these particular endpoints. Security professionals should review their configurations and ensure robust validation processes, especially for certificate management services.

Dynamic OkHttp Traffic Interception with Frida - blog.doyensec.com

Presents a practical guide for security analysts on dynamically intercepting OkHttp network traffic within Android applications using Frida. The article emphasizes the complexity of tracking requests through various mutation stages, necessitating multiple injection points for a comprehensive view. This advanced instrumentation technique is crucial for mobile application penetration testing to gain deep insights into application network communications that often evade standard proxying methods.

🎥 SecVideo #

The 1980s Underground Bulletin Board Systems - youtube.com

Explores the historical context of early decentralized online communities through Bulletin Board Systems (BBS) from the late 1970s and 1980s. This video illustrates the foundational methods of peer-to-peer communication and information sharing predating the modern internet. Understanding these origins provides valuable context for the evolution of networked systems, their inherent vulnerabilities, and the historical trajectory of cybercrime and digital security.

💻 SecGit #

Claude Code Agent Arbitrary File Read - github.com

Documents an accidental discovery of an arbitrary file read vulnerability within Anthropic's Claude Code, an AI coding agent. While the vendor deemed the bug minor and chose not to fix it, this finding highlights the potential security risks and unforeseen side effects inherent in advanced AI systems. Security professionals should be aware of such emergent vulnerabilities when integrating AI agents into development workflows and consider the broader attack surface introduced by these technologies.

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