Whirlpool discussion on the subject makes an interesting (if very lengthy) read. It seems the leak was not exactly a leak. The list is incorporated into several types of filtering software that are generally available. Someone found a security problem in one of these that enabled the list to be recovered from the software update.
Apparently this was not very difficult - there is cryptanalysis software available that make recovery of this sort of list quite easy if you have a good idea of what is in it, which would be the case here.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
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