FOR COMPUTER-SECURITY COURSES THAT ARE TAUGHT AT THE UNDERGRADUATE LEVEL AND THAT HAVE AS THEIR SOLE PREREQUISITES AN INTRODUCTORY COMPUTER SCIENCE SEQUENCE (E.G., CS 1/CS 2). _A new Computer Security textbook for a new generation of IT professionals._ Unlike most other computer security textbooks available today, _Introduction to Computer Security, 1e does NOT focus on the _mathematical and computational foundations of security, and it does not assume an extensive background in computer science. Instead it looks at the systems, technology, management, and policy side of security, and offers students fundamental security concepts and a working knowledge of threats and countermeasures with “just-enough” background in computer science. The result is a presentation of the material that is accessible to students of all levels.