This handbook, Preventing Plagiarism: A Guide for Stockholm University Staff (2024, 2nd Edition), provides a comprehensive framework to combat plagiarism and academic dishonesty in higher education. It addresses challenges arising from the increasing use of digital tools, including generative AI, and explores how these technologies impact student behavior and academic integrity. The guide emphasizes preventive strategies through effective teaching practices, transparent communication of expectations, and the design of assessments. It also includes legal insights, detection methods, and procedures for handling suspected plagiarism cases. By integrating practical exercises, tips for academic writing, and insights into ethical AI usage, this resource equips educators with tools to foster integrity and enhance learning outcomes.