Answer Description
Vishing (Voice Phishing) is a type of phishing attack that uses a telephone or VOIP call to trick an unsuspecting user into divulging important information. Xmas Attack, MAC Spoofing and DDoS are not examples of social engineering, but are malicious attacks.
Wikipedia
Voice phishing, or vishing, is the use of telephony (often Voice over IP telephony) to conduct phishing attacks Landline telephone services have traditionally been trustworthy terminated in physical locations known to the telephone company, and associated with a bill-payer Now however, vishing fraudsters often use modern Voice over IP (VoIP) features such as caller ID spoofing and automated systems (IVR) to impede detection by law enforcement agencies Voice phishing is typically used to steal credit card numbers or other information used in identity theft schemes from individuals Usually, voice phishing attacks are conducted using automated text-to-speech systems that direct a victim to call a number controlled by the attacker, however some use live callers
Voice_phishing - Wikipedia, the free encyclopedia