Ensuring network security is vital to safeguarding network systems and preventing cyberattacks. We study diverse network protocols (including OSPF, ISIS, BABEL, BGP, etc.) through formal analysis and intelligent approaches.

A systematic study of 1,255 routing protocol implementation bugs, characterizing their types, root causes, triggers, and impacts.
NDSS 2027
LLM-driven generation of verified format specifications for network protocols via adversarial refinement.
USENIX Security 2026
A theoretical abstract interpretation framework for building symbolic automata from stateful systems.
CAV 2026
Building equivalent topological configurations for differential testing, supporting OSPF, IS-IS, RIP, BABEL, etc.
ACM CCS 2025
LLM-driven generation of protocol format specifications from RFC documents via divide and conquer.
ACM ISSTA 2025
Differential testing based on format specification lifted from multiple implementations of the same protocol.
ACM OOPSLA 2024 Distinguished Paper
Lifting protocol format specification from a top-down (or recursive-descent) protocol packet parser.
ACM CCS 2023
Lifting protocol format specification from a state-machine parser, which is common in embedded systems for low lentency.
USENIX Security 2023