Mobile Number Fraud in Australia: Protect Yourself from Scam Messages and Account Hacks

Your mobile number is often linked to important accounts like your email, banking, and social media. Scammers target this connection to gain access. 

SIM Swap Fraud 

This occurs when a scammer transfers your mobile number to a new SIM card without your permission. Once they gain control, they can receive one-time codes and reset your passwords. 

Impersonation Scams 

Scammers may pose as your telco provider through SMS, calls, or emails. Their goal is to trick you into sharing sensitive information or clicking on malicious links. 

Scam texts are becoming more sophisticated and can appear to come from trusted sources, including your telco provider. 

Common Red Flags 

• Messages asking you to “verify” your account details  

• Requests for passwords, PINs, or one-time codes  

• Urgent or threatening language  

• Links that lead to unfamiliar or suspicious websites  

The ACMA warns that scammers are sending texts that look like they’re from your telco, making it important to stay cautious with unexpected messages. 

You can also stay updated on the latest scam alerts and trends through Scamwatch, which provides real-time information on current threats across Australia. 

Many mobile fraud cases begin with a compromised email account. Once scammers gain access, they can reset passwords, intercept verification messages, and take over linked accounts. 

Protect Your Email 

• Use strong, unique passwords  

• Enable multi-factor authentication (MFA)  

• Update passwords regularly  

• Avoid reusing passwords across platforms  

The Australian Government offers guidance on securing your email and reducing your risk.  

As an Australian mobile provider operating on the Optus network, Yomojo supports efforts to help customers stay protected against mobile fraud. 

What You Can Expect from Yomojo 

• Clear communication so you can easily recognise legitimate contact  

• Secure account access through a managed dashboard  

• Responsive support to report suspicious activity quickly  

• Flexible, no lock-in plans giving you more control over your service  

Yomojo also encourages customers to follow best practices, such as securing their email accounts and staying alert to scam messages and calls. 

A few everyday habits can help keep your mobile number and accounts safe: 

• Never share passwords or one-time codes  

• Avoid clicking links in unexpected messages  

• Contact your provider directly if unsure  

• Add extra security, such as a PIN, to your account  

• Monitor your accounts for unusual activity 

If you suspect fraud or receive a suspicious message: 

• Contact your telco provider immediately  

• Change your passwords, especially your email  

• Enable MFA on all important accounts  

• Check your bank and online accounts for unusual activity  

• Report the incident to Smartwatch help raise awareness and prevent others from being affected. 

Acting quickly can help minimise any impact and keep your accounts secure. 

Mobile number fraud in Australia is evolving, but staying informed is your best defence. By recognising scam messages, protecting your email, and knowing what to expect from your provider, you can reduce your risk. 

With guidance from ACMA, updates from Scamwatch, and support from providers like Yomojo, you can stay one step ahead and keep your digital life secure. 

You can learn more about protecting yourself from phone and SMS scams here:  

https://www.acma.gov.au/articles/2024-11/watch-out-scam-texts-pretending-be-your-telco  
https://www.acma.gov.au/phone-and-sms-scams  

https://www.scamwatch.gov.au/  

For guidance on securing your email, visit:  
https://www.cyber.gov.au/protect-yourself/securing-your-email/email-security