Amazon.com description: Product Description: Given the subtitle, A hacker's guide to protecting your Linux server and workstation, it is hardly surprising that the author remains anonymous except for the fact that he is a California computer criminal turned security consultant. He covers Linux security basics; and user, network, and Internet security. Appendices include specifics on Linux and Unix security utilities and applications. The CD-ROM features Linux security tools. No date is given for the first edition. Ray is also a security consultant. Annotation c. Book News, Inc., Portland, OR (booknews.com)