The university server containing the information relating to Mason's ID cards was illegally entered by computer hackers.
Computer hackers stole Mason's identity.
( z1 steal :ARG0 ( z2 person :ARG0-of ( z3 hack :ARG1 ( z4 computer ) ) ) :ARG1 ( z5 identity :poss ( z6 person :name ( z7 name :op "Mason" ) ) ) )