Closed Messaging
Private and encrypted messaging apps where influence operations thrive in low-visibility environments resistant to external monitoring.
FIMI Taxonomy v4.1 — Modular taxonomy of foreign information manipulation and interference
February 17, 2026
Channel types describe the platforms and media through which information manipulation is delivered. Each channel type encompasses specific platforms, formats, or venues.
FIMI Taxonomy by Information Epidemiology Lab.
@article{li2026,
author = {Li, E. Rosalie},
title = {Channel {Types}},
date = {2026-02-17},
url = {https://fimi.infoepi.org/channel_types/},
langid = {en}
}