The term which refers to the attempt to gain unauthorized access to systems and computers used bya telephone company to operate its telephone network is a one: a. phone hackerb. hacktivistc. commh@ck3rd. phreaker

Phreaker

Explanation:

Phreaker is defined as the unauthorized attack on  authorized communication system for stealing and manipulation phone networks.

Exploring,searching and identifying telecommunication field with help of technologies,equipment,tools etc is done to exploit the system and resources .Other options are incorrect because phone hacking is attacking phone device, [email protected] is also hacking source and hacktivist hacks system to impact social and political field.Thus, the correct option is option(d)

True or false? is that the question