I signed up to Utility Warehouse here in the UK recently and it prompted me to create a password with the following requirements:

- 8 characters

- 1 uppercase character

- 1 lowercase character

- 1 number

I used KeePass to generate a password with the default 16 characters. Specifically, it spat out: \y%/T:tMAS#1\&e9

It took me a solid 10 seconds to figure out why it was failing the first requirement: UW were only counting the alphabetic letters as characters.

I sent a screenshot to a mate in disbelief, then randomised a new PW until I got one that just happened to have 8+ letters in it.