Is using a VPN cheating on CoD?

Excuse me, could you please clarify for me? I've heard some rumors about using VPNs in Call of Duty being considered cheating. Is there any truth to this? As a gamer and a cryptocurrency enthusiast, I value fair play and integrity in online gaming, but I also need to ensure my privacy and security when accessing the digital world. So, can you explain the potential implications of using a VPN in CoD, and whether it's considered an unfair advantage or simply a way to protect oneself online?