Introduction To Caller ID Spoofing And How It's Used In Scams

July 21st · 3 min read

Guardio Research Team
Guardio Research Team

__Caller ID spoofing makes the caller ID display on a call show a different number than the actual originating phone number. Scammers can use this for legitimate purposes, such as when a doctor's office calls and the caller ID shows up as the office's mainline. __

However, it can also be used for nefarious reasons, such as when scammers spoof the caller ID of a trusted company or government agency to trick people into giving away personal information or money.

By presenting a false caller ID, the person on the receiving end will be more likely to answer the call.

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There are a few different ways that caller ID spoofing can be accomplished:

  • Use a VoIP (Voice over Internet Protocol) service: This service allows users to make and receive calls using an internet connection instead of a traditional phone line. VoIP services often allow users to choose what caller ID is displayed when making a call.

  • Use a calling card or calling features from your phone company: Many phone companies offer call cards that you can use to make long-distance or international calls. These cards typically have an option to set the caller ID. Some phone companies also offer to call features that allow users to set their caller ID or even block it from being displayed.

  • Use a spoofing service: Several commercial services allow users to spoof their caller ID. These services typically charge a fee and require the user to provide the number they want to display and the number they are calling from.

Caller ID spoofing is not necessarily illegal, but scammers can use it for illicit purposes. For example, scammers may use caller ID spoofing to make it appear as if they are calling from a trusted company or government agency to get people to reveal personal information or send money. Spoofing can also make harassing or threatening phone calls without revealing the caller's true identity.

How to determine if caller ID is being spoofed?

The best way to determine if caller ID is spoofed is by using a reverse phone lookup service. This type of service allows you to enter a phone number and see what information is associated. If the number is registered to a VoIP service or calling card company, the caller ID can likely be spoofed. If the reverse phone lookup service returns no information or very little information, it's also a good indication that the number may have been spoofed.

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What should you do if you get a strange phone call?

  • Ignore any incoming calls from an unknown identity.

  • If the caller leaves a message, listen to it carefully.

  • If the call seems suspicious, hang up and do not give any personal information.

  • If the caller ID has been spoofed, the news may give you a clue about the caller's true identity.

You can also report suspicious calls to your local law enforcement agency or the Federal Trade Commission.

Caller ID spoofing is a technique that allows callers to disguise their phone number, making it appear as if they are calling from another number. This can be used for legitimate purposes, such as when doctors' offices need to contact patients.

Still, it can also be used for nefarious reasons, such as when scammers try to trick people into giving away personal information or money.

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