Linux servers now account for 33 percent of all networks servers running worldwide (Source: IDC). The top 3 market share holders in the network server space (IBM, Hewlett-Packard, and Dell) all use Linux as their standard operating system for the majority of their servers designed for medium to large size businesses. As with any technologies, increased usage results in increased attention from malicious hackers. For years a myth existed that Windows was inherently less secure than Linux, because there were significantly more attacks against Windows machines than Linux. But this was a fallacy.There were more attacks against Windows machines because there were simply so many more Windows machines to attack. Now, the numbers tell the exact OPPOSITE story. Linux servers account for 1/3 of all servers worldwide, but in 2005 there were 3 times as many high-severity security vulnerabilities discovered on Linux servers. In 2005 the Linux Server market share was 24 percent. (Source: IDC). In 2005 the number of published Linux Security books was 25. In 2005-2007, the Linux Server market share increases to 33 percent. (Source: IDC). In 2005-2007 the number of new books published on Linux Security are 0. This is the perfect reference for the multitasked sysadmin. Discover why "Measure Twice, Cut Once" applies to securing Linux. This book provides complete coverage of hardening the operating system, implementing an intrusion detection system, and defending databases. It is short on theory, history, and technical data that is not helpful in performing your job.