Sliding Windows Succumbs to Big Mac Attack
-- C.D. Walter, Cryptographic Hardware and Embedded Systems — CHES 2001, Lecture Notes in Computer Science, 2001, Volume 2162/2001, 286-299.

A Big Mac Attack on a secret key d is a method which enables d to be revealed bit by bit by nibbling at sections of d in any order. The implied independence of the derivation of different bits means that the total data and processing time required are only linear in the key length. ... A well known brand product is so generously large as to be impossible to have a bite taken out of the whole at one go − like the method of attack, it must be nibbled at and consumed by tackling individual layers one by one in any order.