Decentralized Communications - Deep-Dive into APRS and Meshtastic

Explore decentralized communication protocols through a comprehensive security analysis of APRS (Automatic Packet Reporting System) and Meshtastic technologies in this 44-minute conference talk from BSidesSF 2025. Compare the fundamental architectures, security models, and vulnerability landscapes of these two prominent decentralized communication systems while examining their real-world deployment scenarios and use cases. Investigate how each protocol approaches critical security challenges including encryption implementation, authentication mechanisms, and overall attack surface management. Analyze the trade-offs between accessibility and security in decentralized networks, understanding how design decisions impact both usability and resilience against various threat vectors. Gain insights into the practical implications of choosing between these protocols for different communication needs, from emergency response scenarios to privacy-focused applications. Learn about the specific vulnerabilities inherent in each system and discover mitigation strategies for securing decentralized communication networks in various operational environments.