side-channel

noun3

1. •
   A branch from the main flow

   • The primary concerns in the development of side-channel habitat are channel stability, potential for deposition and burial, and disturbance of existing riparian and wetland habitats. — 1998
2. •
   An indirect source of information about what a system is doing.

   • For simple power analysis, we explore whether or not instructions can lead to consistently distinguishable side-channel information, and if so, how the side-channel characteristics differ. — 2016
3. •
   Alternative form of sidechannel.