Types of Vishing Techniques
War dialing, which may also be referred to as “wardialing,” is a vishing technique to automatically dial a large list of telephone numbers in search of devices such as modems or fax machines that can be exploited. The purpose of war dialing is to target security vulnerabilities in wireless networks.
This method of vishing (voice phishing) attack involves the creation of fake phone numbers that are difficult to track. The calls may appear to be from the government, local hospitals, police departments, or other legitimate businesses.
Caller ID Spoofing
To disguise their identity, cybercriminals may use caller ID spoofing to falsify the information displayed on the phone’s caller ID.
Dumpster divers locate financial statements, government records, medical bills, resumes, and other sensitive information simply by going through the victim’s rubbish. Information obtained about individuals or organizations could later be used for a cyberattack.
How To Prevent Vishing Scams
- Never divulge social security numbers, credit card numbers, account numbers, or other personal information on the phone. Banks, hospitals, and government agencies will never call you for personal information.
- Do not answer calls from unknown numbers. Let the call go to voicemail.
- Pay attention to the language being used by the caller. Vishing attacks take advantage of basic human behaviors such as fear, greed, and trust.
- Do not respond to emails or social messages asking for your phone number.
- Register your phone number with the Do Not Call Registry.
- Use common sense when dealing with any caller you do not recognize. Do not respond to requests to transfer funds, provide confidential information or email documents fro your personal account.