Most people know that viruses can make people very sick. But there are also certain kinds of viruses that can infect computers. In this book, readers will learn about computer programs called viruses, and how they can harm devices and even steal information. The book will explain how users can keep their computers and other technology safe and what to do if a virus happens to infect their device. The text includes fact boxes and full-color photographs to enhance STEM learning. Approachable language encourages independent reading and comprehension.