By the end of this lesson you can
- Recognise dark patterns and deceptive design.
- Explain the harm they cause and the legal risks.
- Design ethical alternatives and raise concerns at work.
The idea
Dark patterns (also called deceptive patterns) are design choices that trick or pressure people into doing things they did not intend, usually for the business's benefit.
Common examples
- Confirmshaming: "No thanks, I don't like saving money."
- Roach motel: easy to sign up, very hard to cancel.
- Sneaking: adding items or fees to a basket without clear consent.
- False urgency and scarcity: fake countdown timers and "only 1 left" messages.
- Disguised ads: ads that look like content or navigation.
- Preselected options: opting people into marketing or add-ons by default.
- Nagging: repeated prompts until people give in.
- Privacy zuckering: confusing settings that lead people to share more data than intended.
Harm and law
Dark patterns harm users financially and emotionally, and erode trust. Regulators increasingly act against them under consumer protection and data protection laws, including the EU Digital Services Act and GDPR, the UK's consumer law and the US FTC.
Ethical design
Ask: would users be happy if they fully understood what we are doing? Make cancelling as easy as signing up, make defaults respect user interests, and be honest about costs and scarcity.
Why it matters in real projects
Designers are often the people asked to build manipulative features, so they are well placed to prevent them. Dark patterns may raise short-term numbers, but they increase complaints, cancellations, regulatory fines and reputational damage. Ethical design builds long-term trust, which is a lasting business advantage.
A realistic example
A streaming service requires people to phone during office hours to cancel, while sign-up takes one click. The designer is asked to add a fourth "Are you sure?" screen to the online pause flow.
The designer raises the issue with the product manager, citing complaints data, regulatory guidance on easy cancellation and the risk of fines. They propose an honest cancellation flow with one retention offer and a clear confirmation. Cancellations rise slightly at first, but complaints drop sharply and returning subscribers increase over the following months.
Step by step
Learn the patterns
Study a catalogue of deceptive patterns.
Audit a product
Look for patterns in sign-up, checkout, cancellation and privacy settings.
Assess harm
Note who is harmed and how.
Design alternatives
Create honest versions that still meet business goals where possible.
Prepare your case
Gather evidence on complaints, law and long-term impact.
Raise concerns
Discuss constructively with your team and escalate if needed.
Common mistakes
Mistake Treating dark patterns as clever growth tactics.
Instead Consider long-term trust, harm and legal risk.
Mistake Staying silent when asked to build them.
Instead Raise concerns with evidence and alternatives.
Mistake Defaults that serve the business only.
Instead Make defaults respect user interests.
Check your understanding
Choose an answer, then check it. There is an explanation either way.
Practice exercise
Exercise · about 45 min
Dark pattern audit
Audit a subscription service for dark patterns.
Steps
- Go through sign-up, settings and cancellation.
- List any dark patterns with screenshots.
- Assess harm and legal risk.
- Design an ethical alternative for one.
Deliverable
An audit and one redesigned flow.
Self-assessment
Tick each item when it is true of your exercise. Be honest; this is for you.
4 items
Summary
- Dark patterns trick or pressure people.
- They cause harm and legal risk.
- Ethical design respects informed choice.
- Designers can and should push back.
Further reading
Third-party sources, chosen for reliability. They open in a new tab.
- Deceptive patterns (opens in a new tab)Harry Brignull
- Deceptive patterns in UX (opens in a new tab)Nielsen Norman Group
Your notes
Marking complete updates your course and roadmap progress.