Get working security device, having been taken in by swindle (5,2)
I believe the answer is:
clock on
'get working' is the definition.
I can't tell whether this defines the answer.
'security device having been taken in by swindle' is the wordplay.
I cannot really understand how this works, but
'security' could be 'lock' and 'lock' is found within the answer.
'swindle' could be 'con' (con is a kind of swindle) and 'con' is found in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for clock on that I've seen is " Arrive for work".)