Spoofing is legal in Australia for legitimate business purposes (like call centres displaying a main number) but becomes illegal when used maliciously for scams, fraud, or identity theft, with new rules requiring telcos to block unregistered SMS sender IDs to combat this. The key difference is intent: authorized uses, like banks sending appointment reminders, are permitted, while hiding a scammer's real location or identity by faking caller ID is against the law and subject to penalties, notes ACMA and ACCC.
This is legal in Australia unless it is being done for unlawful or malicious purposes, most commonly to carry out scams.
Recent Spoofing Cases
Several high-profile examples include: United States v. Coscia (2015): The first federal criminal prosecution for spoofing under the Dodd-Frank Act. The trader was convicted and sentenced to prison for manipulating futures markets with rapid-fire, cancelable orders.
Can spoofed calls be traced? Yes, but tracing spoofed calls can be difficult. While law enforcement and telecom providers can sometimes trace calls to their origin, fraudsters often use anonymizing technologies or overseas infrastructure to evade detection.
What to do if your number is spoofed. If you get calls from people saying they missed a call from you, or accusing you of being a scammer, even though you didn't call them, it's likely that your number has been CLI spoofed. If you believe your number has been spoofed, you should contact your telco immediately.
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.
If you're getting angry calls and texts now, there's a good chance they will stop soon — once the scammer moves to another victim's number. Still, having your phone number spoofed is never a good sign and can often be a symptom of a larger and more dangerous issue.
Dialing *77 on your phone activates Anonymous Call Rejection, blocking incoming calls from private or blocked numbers, making anonymous callers hear a message to hang up and try again. It's a landline/VoIP feature (like AT&T, CenturyLink) to stop spam/prank calls but can sometimes vary by carrier or state, potentially connecting to emergency services (like *87 to turn it off).
This means a scammer is using your number to disguise their identity when making spam or robocalls. Unfortunately, this is a common issue affecting people across all carriers. While spoofing does not mean your phone or account has been hacked, it can be frustrating.
You should be wary of answering calls from Caribbean area codes like 876 (Jamaica), 473 (Grenada), 268 (Antigua & Barbuda), 284 (BVI), and 649 (Turks & Caicos), as these are frequently linked to one-ring scams, lottery fraud, and investment scams, where a brief ring prompts you to call back, incurring high charges. Letting calls from unknown international numbers go to voicemail is best, as scammers often spoof local numbers or use these hotspots for fraud, and legitimate callers usually leave a message.
The most common types of spoofing attacks include:
A spoofed email that appears to be from Best Buy. Hackers use fake phone numbers, email addresses, and websites to try and trick you. They make the content look real enough for you to engage with it. If you do, they can steal your personal information, money, or access to accounts.
If somebody is spoofing your number, reporting it to the Federal Trade Commission (FTC) is crucial. The FTC collects reports to identify patterns and track down scammers, helping to prevent further fraudulent activity. You can also call the FTC directly at (877) FTC-HELP — (877) 382-4357 — to file a report.
When is spoofing illegal? 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.
Quick Glance – What's Important: Police can take your phone without a warrant if they have solid reasons to believe it's stolen or holds evidence of a serious crime. They can't force you to unlock your phone unless they have a Digital Access Order or a specific search warrant.
Should You Change Your Phone Number If It's Being Used by Scammers? If the spoofed calls persist, changing your phone number with your service provider can offer a fresh start. This is a drastic measure and should be used as a last resort.
Unusual phone activity when not in use
If your phone is making noises, the screen is lighting up when you're not using it, or you're receiving calls and notifications while in silent mode, it can signal that somebody has hacked your phone.
Service providers
Customers dial the number given to them by the company, their PIN, the destination number and the number they wish to appear as the caller ID. The call is bridged or transferred and arrives with the spoofed number chosen by the caller—thus tricking the called party.
Does Turning Your Phone Off Stop Hackers? For most people, yes. Everyday malware and common scams can't touch a device once the operating system shuts down. That's why rebooting often clears suspicious behavior; it kills anything living in memory.
This Vertical Service Code, *82, enables calling line identification regardless of subscriber preference, dialed to unblock withheld numbers (private callers) in the U.S. on a per-call basis.
Call trace allows you to dial the code *57 to trace the phone number of a call that was received. This service is used to trace harassing calls which warrant law enforcement or legal action. If you do not intend to take legal action, then an alternative is to use Call Return with *69.
It's much better to block spam calls and report them as spam rather than just deleting them, as blocking prevents future calls from that number and trains your carrier's filters, while deleting or declining just confirms your number is active, making you a target for more calls. Deleting or declining shows scammers your number is a valid, active mobile line, increasing your risk for more calls and potential fraud, so use built-in phone features, carrier services, or third-party apps to block unknown callers and mark spam.
Unfortunately, spoofers typically use special software, and their calls often come from outside our network. As a result, spoofed calls tend to be untraceable and difficult to prevent.
Contact your carrier: ask your mobile service provider if any other numbers or SIM cards are registered under your ID that you did not authorize; Credit monitoring: use credit monitoring services to watch for new accounts or services being opened in your name. This could indicate unauthorized use of your phone number.
Spoof calling and caller ID spoofing are common strategies used to target and steal personal information. Be cautious of unexpected calls from numbers you don't recognize. If you receive a call from an unknown number that is nearly identical to your own, it's highly likely that the call is from a scammer.