University attendance hit badly over university not having legal status (15)

I believe the answer is:

unauthenticated

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'not having legal status' is the definition.
I can't tell whether this defines the answer.

'university attendance hit badly over university' is the wordplay.
'university' becomes 'U' (abbreviation for university).
'badly' indicates an anagram (letters in the wrong order).
'over' means one lot of letters goes inside another.
'university' becomes 'U' (abbreviation for university).
'u'+'attendance'+'hit'='uattendancehit'
'uattendancehit' is an anagram of 'unathenticated'.
'unathenticated' placed around 'u' is 'UNAUTHENTICATED'.

Can you help me to learn more?

(Another definition for unauthenticated that I've seen is " Potentially fake".)

I've seen this clue in The Telegraph.

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