Protocol Fuzzing
Noun · Security & Infosec
Definitions
Fuzz testing aimed at network or file protocols by sending malformed, unexpected, or state-breaking inputs to parsers and implementations. Protocol fuzzing is especially useful for finding crashes, parser bugs, and state-machine flaws in devices, servers, and custom transports.
In plain English: Sending malformed protocol messages to find bugs in how systems process them.
Example: "The team used protocol fuzzing against the VPN appliance and uncovered a crash path in the handshake parser."