WYCIWYG's an acronym that stands for What You Cache Is What You Get, or more commonly displayed in the address bar of Gecko-based Web browsers like Mozilla Firefox as wyciwyg:// when the Web browser's retrieving cached information. Usage Mozilla Firefox implements a unique, strictly internal wyciwyg:// pseudo-URI scheme to sort and later reference locally cached pages that were generated or modified scriptually on client side (a common practice for Web 2.0 sites). Security Issues Michal Zalewski… (More on Wyciwyg)