This book explores the ethical challenges of user interface (UI) design, focusing on the detection and mitigation of dark patterns—deceptive design techniques that manipulate user behavior. As digital platforms increasingly shape user interactions, these unethical practices raise concerns about transparency, privacy, and consumer rights. This book examines dark patterns from psychological, ethical, and legal perspectives while introducing intelligent systems—such as artificial intelligence (AI) and machine learning—as tools to identify and counter deceptive design. Through case studies and real-world applications across e-commerce, social media, and mobile platforms, the book highlights the role of technology in fostering ethical UI practices. By bridging the gap between design, regulation, and intelligent automation, this book serves as a critical resource for researchers, designers, and policymakers committed to creating transparent, user-centric digital experiences.