de-rezz = D = dead beef attack

dead adj.

1. Non-functional; down; crashed. Especially used of hardware. 2. At XEROX PARC, software that is working but not undergoing continued development and support. 3. Useless; inaccessible. Antonym: `live'. Compare dead code.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.