Donald A. Tevault

Donald A. Tevault is the author of "Mastering Linux Security and Hardening." While specific information about the author is not provided in the given documents, it can be inferred that Tevault is knowledgeable in the field of Linux security and system administration.

His work on this book suggests expertise in Linux operating systems, security practices, and hardening techniques.

Tevault's ability to write a well-received book on such a technical subject indicates a deep understanding of the topic and likely stems from practical experience in the field.

His contribution to Linux security literature has been appreciated by readers seeking to enhance their knowledge in this area.