Customers of a number of US banks have recently been hit by Voice over IP phishing (vishing) attacks orchestrated by eastern European cyber crooks, warns John LaCour, founder and CEO of PhishLabs.

“While not as prevalent as online phishing and crimeware attacks, vishing attacks are often run by professional crews. These crews use vishing to harvest card data, which they then sell or hand-off to cash-out crews,” he explained in a blog post earlier this week.