Edwina Dunn and Clive Humby are the founders of dunnhumby, and the brains behind Tesco's hugely successful Clubcard scheme. Introduced in 1995, Clubcard became the world's most successful retail loyalty scheme and today provides insights into shopping habits of approximately half of all UK households.
"This document shows the approximate amount of time required for a computer or a cluster of computers to guess various passwords. The figures shown are approximate and are the maximum time required to guess each password using a simple brute force "key-search" attack, it may (and probably will) be possible to guess correctly without trying all the combinations shown using other methods of attack or by having a "lucky guess"."
