In this episode of CyberGuardians, we dive into the world of PBX hacking — the art of breaking into private phone systems to make free calls, set up hidden lines, and explore networks once thought to be secure. From the early days of phreaking to modern VoIP vulnerabilities, we uncover how these attacks worked, why they were so effective, and how organizations today can better defend against them. Tune in for a quick yet fascinating journey into one of cybersecurity’s most old-school exploits!