"Machine Learning and Data Mining for Computer Security" provides an overview of the current state of research in machine learning and data mining applied to problems in computer security. This transaction is the article with the topic of host-based intrusion detection through analysis of audit trail, the sequence of commands and system calls and network intrusion detection through analysis of the TCP packet and detection of malicious executables. This book fills a great need for a book that collects and frame work to develop and apply methods of machine learning and data mining problems in computer security.