cracksman:
(plural: cracksmen; pronunciation: both the ‘c’ in this word are pronounced with a ‘k’ sound — ‘cracks…man’)

(a safe)
a thief who steals things from houses, especially by breaking open safes; a safebreaker;
a burglar; a safecracker,

a cracksman at work
As the saying goes ‘no safe is safe from a determined cracksman’.
The entire neighbourhood was surprised to learn that Bruce, the timid lean fellow who had been living with them for some time now, was a cracksman and had been in prison for breaking open the strongest safes in the business centre of the city.
A true cracksman does not need any special tool to break open locks and safes; he can open a lock using a thin wire twisted into a particular shape that suits the lock!
The cracksmen of the present, like every other technician in their own field of operation, are thorough with the latest gadgets that help them to open the digital locks on the ultra modern safes.
