Noone should of aloud this code to go out the door. Atleast alot of other people people probably complained aswell, so your apart of a bigger group, incase you were worried.
My guess is they mean, one capital letter, one lower case letter, a number, and a special character
what's always amused me about these rules is that they exist because people are dumb. Technically, they lower the difficulty of the passwords slightly. ( for example, knowning that one character is a number reduces it to 10 options in stead of 10+26+26+whatever set of special characters)
anyhow. people should use password managers. just saying.
Please tell me someone didn't buy software with 'atleast' spelled like that in there. Please, tell me someone tested the web app and had the brains God gave a douglas fir and knew that wasn't a word; that it was never a word; that the writer's spell check should have picked that up; that it's not been over-ruled by stupid so much that it just takes it.
Well now. When we've been enforcing password requirements at work, we've had to enforce a bizarre combination of "you must have a certain level of complexity", but also, "you must be slightly vague about what the requirements actually are, because otherwise it lets an attacker tune a dictionary attack against you". Which just strikes me as a way to piss off our users, but security team say it's a requirement, therefore, it's a requirement, no arguing.
"One" special character is crazy; I'd have guessed that was a catch-all for the other strange password requirements:
can't have the same character more than twice in a row
can't be one of the ten-thousand most popular passwords (which is mostly a big list of swears in russian)
all whitespace must be condensed into a single character before checking against the other rules
We've had customers' own security teams asking us if we can enforce "no right click" / "no autocomplete" to stop their users in-house doing such things; I've been trying to push back on that as a security misfeature, but you can't question the cult thinking.