Discreet computer material confiscated by cops, except last item (7)
I believe the answer is:
politic
'discreet' is the definition.
(I've seen this in another clue)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for politic that I've seen before include "Sensible, judicious" , "Expedient" , "Prudent, sagacious" , "Intriguing" , "Prudent, discreet" .)