Authorization and forbidding are both explicit actions. Unauthorized refers to the absence of authorisation. ‘Unauthorized use is forbidden’ means ‘all use mu

Authorization and forbidding are both explicit actions. Unauthorized refers to the absence of authorisation. ‘Unauthorized use is forbidden’ means ‘all use must have explicit permission.’ Clearly it is a bit disingenuous as it usually means ‘all use I don’t like / is not inline with norms’.