Deceptive design patterns are tricks used by websites and apps to get you to do things you might not otherwise do, like buy things, sign up for services or switch your settings. Another word used to describe deceptive design patterns is dark patterns*, which was originally coined in 2010 by user experience specialist Harry Brignall, drawing attention to this practice and building momentum around calling it out.
Deceptive design patterns show up as tricky color schemes, frustrating mazes, sneaky designs and confusing language. Websites use these techniques to influence your behavior into a direction that benefits them more than it benefits you. Here are examples of deceptive or manipulative designs you might run into.
Learn more: https://blog.mozilla.org/firefox/deceptive-design-patterns/