What is “vishing”?
Vishing is the telephone equivalent of phishing. Vishing is the act of using the telephone in an attempt to scam the user into surrendering private information that will be used for identity theft. The scammer usually pretends to be a legitimate business, and fools the victim into thinking he or she will profit.
Never give your credit card number, your Social Security number, driver's license number or account details over the Internet or by phone unless you know for sure that you are dealing with the correct entity.