Hacking is a major problem for individuals and governments around the world. Hackers can steal private citizens' identities, release government secrets, and even try to influence elections. However, many people are working to stop hackers and to protect information. Readers develop a strong understanding of hacking and the efforts to combat it through informative text that focuses on facts rather than fear. Graphic organizers, fact boxes, and full-color photographs provide additional information and examples. This accessible introduction to an important issue enhances critical thinking skills and gives young people tips to better protect themselves online.