Most businesses and individuals don't need to have on their...

Most businesses and individuals don't need to have on their staff a Digital Sherlock Holmes but they should have plans to identify and preserve important digital evidence such as email, web transactions, PCs, PDAs and cellphones - and have a broad understanding of some of the associated legal problems such as admissibility and privacy. It is very odd that organisations have in place contingency plans for low likelihood/high impact events like fire and terrorism but nothing for common place high frequency events.