Right away secured criminal to corrupt (6)
I believe the answer is:
seduce
'corrupt' is the definition.
(thesaurus)
'right away secured criminal' is the wordplay.
'right' becomes 'r' (common abbreviation).
'away' is a deletion indicator.
'criminal' indicates anagramming the letters.
'secured' with 'r' taken away is 'secued'.
'secued' with letters rearranged gives 'SEDUCE'.
'to' is the link.
(Other definitions for seduce that I've seen before include "get into bed?" , "Lead astray, tempt" , "Debauch" , "Charm - deprave" , "Lure or entice away from proper behaviour" .)