Cylie is investigating a network breach at a state organization in Florida. She discovers that the intruders were able to gain access into the company firewalls by overloading them with IP packets.
Cylie then discovers through her investigation that the intruders hacked into the company phone system and used the hard drives on their PBX system to store shared music files.

What would this attack on the company? PBX system be called?

A.
Phreaking

B.
Squatting

C.
Crunching

D.
Pretexting