Enterprise Privacy Authorization Language
Enterprise Privacy Authorization Language (EPAL) is a formal language for writing enterprise privacy policies that control how data is handled in IT systems, using precise positive and negative authorization rights. IBM submitted EPAL to the World Wide Web Consortium (W3C) in 2003 for possible standardization. In 2004, Zero-Knowledge Systems filed a lawsuit claiming IBM breached a copyright agreement from earlier work on Privacy Rights Markup Language (PRML). EPAL is based on PRML, and Zero-Knowledge argued they should share ownership of the standard.
This page was last edited on 2 February 2026, at 18:37 (CET).