In today's networked world, security is crucial. As e-business sweeps the enterprise, effectively protecting data can mean the difference between secure businesses that can build and maintain trustworthy relationships with customers and business partners and those with vulnerable systems that are subject to catastrophes both natural or malicious. For years, AS/400 professionals have depended on earlier editions of this book to learn and implement essential security concepts. Whether you're just starting out or have been charged with updating AS/400 security to support your enterprise as it expands its use of the Internet, Implementing AS/400 Security, Fourth Edition is a must-have resource. Book jacket.