Dark pattern

/dɑːrk ˈpætərn/

A dark pattern is an interface deliberately designed to manipulate people into doing something they didn't set out to do — like signing up for a subscription, sharing personal data, or spending more than they planned. Instead of helping users reach their own goals, the design quietly steers them toward the business's goals.

The term was coined by UX specialist Harry Brignull in 2010 (and is increasingly called a “deceptive pattern”). Common examples include hidden costs revealed only at checkout, pre-ticked consent boxes, fake urgency countdowns, hard-to-find opt-outs, and “confirmshaming” that guilt-trips people into agreeing.

Why do dark patterns matter?

Dark patterns erode trust. They might lift short-term conversions, but they leave users feeling tricked, drive complaints and churn, and damage a brand’s reputation. They are also a growing legal risk — rules like the EU’s GDPR and Digital Services Act, and the US FTC, restrict or ban deceptive designs.

Recognising dark patterns helps designers stay on the ethical side of persuasion. The aim is to influence honestly — making the easiest path the one that genuinely serves the user, not the one that exploits their inattention.

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