unauthenticatedpast participle
UK
/ˌʌn.ɔːˈθen.tɪ.keɪ.tɪd/
US
/ˌʌn.ɔːˈθɛn.tɪ.keɪ.tɪd/
Functions as the past participle of the verb "authenticate" with the negative prefix "un-", used adjectivally.
Definitions
Not having been authenticated; lacking verification of authenticity. Any unauthenticated message will be rejected by the server.