Dark pattern

A dark pattern (also known as a "deceptive design pattern") is "a user interface that has been carefully crafted to trick users into doing things, such as buying overpriced insurance with their purchase or signing up for recurring bills". User experience designer Harry Brignull coined the neologism on 28 July 2010 with the registration of darkpatterns.org, a "pattern library with the specific goal of naming and shaming deceptive user interfaces".

In 2021 the Electronic Frontier Foundation and Consumer Reports created a tip line to collect information about dark patterns from the public.