Consumer Alert: Telephone Spoofing

Consumer Scam Alert

Telephone Spoofing
 by Federal Communications Commission

Scammers use spoofing to falsify caller ID numbers that appear on your phone, disguising their identities as they try to steal your money or valuable personal information. Learn what you can do to avoid spoofing scams:

A unique type of technology now enables fraudsters to fake the number they are calling from by making a false number appear on your caller ID. It’s become an effective scam effort because the number displayed appears to be your bank’s correct contact number.

This scam is called Number Spoofing, and here’s how it works: criminals clone the actual telephone number of an organization they want to impersonate. Using specialized technology, the number appears on the victim’s caller ID display.

Then, when you answer the call, they often pose as bank staff, police officers or other trusted organizations in order to persuade you to disclose sensitive financial and personal details – often on the pretense that fraud has been detected on your account.

In many cases – because a well-known precaution for phone scams is to hang up and initiate the phone call yourself – the criminal will ask you to call the bank on the number on the back of the bank card (the same number displayed on your handset). But instead of terminating the call on their end, the fraudsters simply keep the phone line open, play a fake dial tone and pretend to answer your “call.”

Having convinced you of their legitimacy, they will then ask you to move money to a secure account, or in some extreme cases, hand your debit or credit cards over to a courier.

While the technology needed to spoof someone’s number has existed for years, the scam itself is a recent phenomenon. Some victims have lost up to thousands of dollars.

If a number appears on your phone’s caller ID display, you shouldn’t necessarily assume you know where the call is originating. Further, if a caller is trying to draw your attention to the number on your phone display, it’s very unlikely the call is genuine because there is no logical reason to point it out.

The best advice to beat the scam is simple – never assume that someone is who they purport to be just because the number displayed on your caller ID matches that of an organization you know. Always be suspicious if you’re asked for your four-digit PIN or full online banking passwords. The same goes for transferring or withdrawing money or giving your card to a courier. Remember, your bank will never ask you to do any of these things.

If you think you’ve been the victim of a spoofing scam, you can file a complaint with the FCC.


Spoofing is when a caller deliberately falsifies the information transmitted to your caller ID display to disguise their identity. For example, scammers often use neighbor spoofing, so it appears that an incoming call is coming from a local number or spoof a number from a company or a government agency that you may already know and trust. Then, if you answer, they use scam scripts to steal your money or valuable personal information, which can be used in fraudulent activity.

  • You may not be able to tell right away if an incoming call is spoofed. So be extremely careful about responding to any request for personal identifying information.
  • Don't answer calls from unknown numbers. If you answer such a call, hang up immediately.
  • If you answer the phone and the caller - or a recording - asks you to hit a button to stop getting the calls, you should hang up. Unfortunately, scammers often use this trick to identify potential targets.
  • Do not respond to any questions, especially those answered with "Yes" or "No."
  • Never give out personal information such as account numbers, Social Security numbers, mother's maiden names, passwords or other identifying information in response to unexpected calls or if you are at all suspicious.
  • If you get an inquiry from someone who says they represent a company or a government agency, hang up and call the phone number on your account statement, in the phone book, or on the company's or government agency's website to verify the authenticity of the request. You will usually get a written statement in the mail before you get a phone call from a legitimate source, particularly if the caller is asking for a payment.
  • Use caution if you are being pressured for information immediately.
  • If you have a voice mail account with your phone service, be sure to set a password for it. Some voicemail services are preset to allow access if you call in from your own phone number. A hacker could spoof your home phone number and gain access to your voice mail if you do not set a password.
  • Talk to your phone company about call blocking tools and check into apps you can download to your mobile device. The FCC allows phone companies to block robocalls by default based on reasonable analytics. More information about robocall blocking is available at
  • Remember to check your voicemail periodically to avoid missing important calls and clear out any spam calls that might fill your voicemail box.

If you get calls from people saying your number is showing up on their caller ID, it's likely that your number has been spoofed. We suggest first that you do not answer any calls from unknown numbers, but if you do, explain that your telephone number is being spoofed and that you did not actually make any calls. You can also place a message on your voicemail letting callers know that your number is being spoofed. Usually, scammers switch numbers frequently. It is likely that within hours they will no longer be using your number.

Robocallers use neighbor spoofing, which displays a phone number similar to your own on your caller ID, to increase the likelihood that you will answer the call. To help combat neighbor spoofing, the FCC is requiring the phone industry to adopt a robust caller ID authentication system.

Under the Truth in Caller ID Act, FCC rules prohibit anyone from transmitting misleading or inaccurate caller ID information with the intent to defraud, cause harm or wrongly obtain anything of value. Anyone who is illegally spoofing can face penalties of up to $10,000 for each violation. However, spoofing is not always illegal. There are legitimate, legal uses for spoofing, like when a doctor calls a patient from her personal mobile phone and displays the office number rather than the personal phone number or a business displays its toll-free call-back number.

If a telephone number is blocked or labeled as a "potential scam" or "spam" on your caller ID, it is possible the number has been spoofed. Several phone companies and app developers offer call-blocking and labeling services that detect whether a call is likely to be fraudulent based on call patterns, consumer complaints or other means.

The FCC allows phone companies to block robocalls by default based on reasonable analytics. Carriers are also able to offer white list services to consumers. These services would block calls from numbers not on your contact list, or another list you supply. The FCC has encouraged providers who block calls to establish a means for a caller whose number is blocked to contact the provider and remedy the problem. Providers are also encouraged to give consumers information on specific calls being blocked, along with a way for consumers to let them know if a number has been blocked incorrectly.

You can legally block the transmission of your phone number when you make calls, so your number will appear as "unknown." Doing so is not spoofing.

FCC rules specifically require that a telemarketer:

  • Transmit or display its telephone number or the telephone number on whose behalf the call is being made, and, if possible, its name or the name of the company for which it is selling products or services.
  • Display a telephone number you can call during regular business hours to ask to no longer be called. This rule applies even to companies that already have an established business relationship with you.


FCC Avoid Spoofing Scams Advice Sheet

Disclaimer: Do not share confidential, privileged, or sensitive information via unencrypted email. As with any information submitted over the internet, there is a risk that the information could be intercepted, viewed, or retrieved by a third party. For your protection, please do not include personal information, such as Social Security numbers or account numbers, in email messages.

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