Skip to content
The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryB2B & GrowthDark Funnel

B2B & Growth

Dark Funnel

The untrackable parts of a B2B buyer's research, like peer chats, podcasts, communities and social, that attribution tools miss.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

The dark funnel is the untrackable part of a B2B buyer's research, such as peer chats, podcasts, communities and social media, that attribution tools miss. Buyers often form preferences long before filling out a form. Marketers address it by asking prospects how they heard about the company and investing in brand and community presence.