A hacker tries to access a computer illegally.
You would call that forgery on a black market and the person selling it a con artist.
An architect.
A builder.
builder
An architect
An archaeologist or an architectural historian typically studies ancient buildings.
an architect designs a building
Dealer, supplier or distributor...
Security guard
If you are here illegally, he can. If you are here illegally, he can.
Manhole