Check sequence, right? Australian student provides security (10)
I believe the answer is:
collateral
'security' is the definition.
(collateral is a kind of security)
'check sequence right? australian student' is the wordplay.
'check sequence' becomes 'collate' (I am not sure about this - if you are sure you should believe this answer much more).
'right?' becomes 'R' (common abbreviation).
'australian' becomes 'A' (common abbreviation).
'student' becomes 'l' (as in L-plates for learner drivers).
'collate'+'r'+'a'+'l'='COLLATERAL'
'provides' is the link.
Can you help me to learn more?
(Other definitions for collateral that I've seen before include "Confirmatory - recall a lot (anag)" , "damage?" , "Secondary; parallel" , "Something pledged as security for a loan" , "running side by side" .)