Scammers have found a way to exploit vulnerabilities in VoIP (Voice over Internet Protocol) via a scam called vishing. This scam works much like any phishing attack: a scammer purports to be a legitimate entity and asks the potential victim to provide sensitive information.

What you need to know about VoIP phishing

Scammers deriving new ways to scam via VoIP
VoIP (Voice over Internet Protocol) makes business communications simple and inexpensive. However, scammers are still finding ways to exploit VoIP, such as through “vishing scams, a new type of phishing wherein fraudsters make phone calls, pose as a business or financial partner, and request private details.