Definition of perpetrator-to be guilty of,or responsible of the crime etc; to commit
Source.(en.wiktionary.org/wiki/perpetrate)

Definition of cyber criminal-

Computer crime issues have become high-profile, particularly those surrounding hacking, copyright infringement through warez, child pornography, and child grooming. There are also problems of privacy when confidential information is lost or intercepted, lawfully or otherwise.

Definition of cyber terrorist-hacker: a programmer who breaks into computer systems in order to steal or change or destroy information as a form of cyber-terrorism
wordnet.princeton.edu/perl/webwn