Information theft involves the stealing of data. This can be done from a remote location. Theft of hardware involves the physical removal of hardware from an organisation. The hardware may also contain data of course.
informations
NO
The noun form for the verb to differ is the gerund, differing. A related noun form is difference.
A computer.
Yes it is.
YES
Because of how they form and what conditions they form under.
Differed.
Grand Theft Auto
The singular form of the plural noun thieves is thief.
Yes
Lab tops are just tables so no. Laptops do need some form of hardware to run. A laptop is hardware.