What is dark traffic?

The term predates AI and originally described things like links clicked inside apps, PDFs, or messaging tools that strip referrer information before the browser sends the request. Analytics platforms have no way to know the visitor came from a link at all, so they default to labeling the visit as if the person typed the URL in directly.

AI chat interfaces add to this problem, since many run inside apps or in-app browsers that similarly do not pass along a normal referrer. A visit prompted by an AI's recommendation can show up in a publisher's analytics as plain direct traffic, indistinguishable from someone who already knew the brand and typed the address from memory. A sudden rise in direct traffic to one specific page, with no obvious cause, is worth investigating as a possible sign of AI-driven referrals that the analytics setup simply cannot see.