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Public Wi-Fi Exposes Users to Cyber Threats

Are you secure when you use public Wi-Fi?

If you or your employees regularly use public Wi-Fi for work, understanding the hidden dangers is crucial. Here’s why doing business on public Wi-Fi is a major security risk and how to protect yourself.

Security Threat to iPhone Users

The Auto-Join Wi-Fi setting on iPhones automatically connects your device to any public hotspots in your area at cafes, restaurants, and other locations, sometimes without you even realising it.

By default, this feature can expose your phone to potential security threats, making it easier for cybercriminals to intercept sensitive data.

Essentially, it’s like walking around with a digital bullseye on your device. Disabling Auto-Join can help keep your accounts and information secure.

Keep reading to find out how you can use public Wi-Fi securley in 2025…

Disable Auto-Join to Secure your Accounts Today

We’ve created a really simple 6 step how to for securely disabling the auto-join feature on any apple device. Click below to request your free tutorial link now

Can you use Wi-Fi hotspots?

Yes, but cautiously. Public Wi-Fi hotspots are useful for browsing and general tasks but should not be used for sensitive transactions or confidential business activities without extra security measures like VPNs.

Can you use mobile hotspots securely?

Yes! Mobile hotspots are generally more secure than public WiFi because they use cellular networks with encryption. However, to enhance security:

Use strong passwords

 Set a unique, complex password for your hotspot.

Enable encryption (WPA3 / WPA2)

Configure security settings to prevent unauthorised access.

Monitor connections

Regularly check who is connected to your hotspot to prevent intrusions.

Turn off when not in use

Reduce exposure by disconnecting when the hotspot isn’t needed.

How can you use public WiFi securely without a cyber risk?

Using public Wi-Fi comes with security risks, but you can mitigate them with the following practices:

Use a VPN (Virtual Private Network)

A VPN encrypts your internet connection, making it much harder for hackers to intercept your data.

Always use a trusted VPN service when working on public networks, if you need help setting up a secure VPN contact our team who have heaps of experience helping businesses and individuals set up VPNs to support hybrid workers.

Enable Multi-Factor Authentication (MFA)

Even if your password is compromised, MFA adds an extra layer of security by requiring a second verification step (such as a code sent to your phone).

Avoid Accessing Sensitive Business Accounts

Do not log in to banking portals, company systems, or sensitive databases while connected to public Wi-Fi.

Use a secure, private network instead.

Turn Off Auto-Connect & File Sharing

Disable auto-connect settings on your device and turn off file sharing to prevent unauthorised access to your files.

Use Mobile Data or a Personal Hotspot

Instead of using public Wi-Fi, tether your device to your mobile network for a safer connection. 

Turn off file sharing 

Disable file sharing features to prevent unauthorized access

Use HTTPS websites 

Ensure the sites you visit use HTTPS for encrypted connections.

Keep Software and Security Tools Updated

Ensure your operating system, antivirus software, and firewall are always up to date to protect against cyberthreats.

While public Wi-Fi offers convenience, it comes with serious cybersecurity risks.

Cybercriminals can steal sensitive business data, hijack credentials, and deploy malware—all without you realising it. To remain secure, avoid using public Wi-Fi for work whenever possible.

If you must connect, always use a VPN, multi-factor authentication, and other security measures to minimise risk.

Staying cyber-aware ensures you remain secure, compliant, and trustworthy, no matter where you work.

Download our free cybersecurity basics for businesses by clicking below.

Cyber Security Basics for Beginners Free Guide

If you’ve got this far, you are concerned about cybersecurity. Keep yourself super safe and download our free cybersecurity guide

Click here to view now!

Data Breaches and Compliance Violations of using Public Wi-Fi

Many industries, including finance, healthcare, and legal services, must comply with strict data protection regulations such as GDPR, PCI DSS, or HIPAA. Using unsecured public Wi-Fi can lead to:

  • Unintentional data breaches that expose customer or employee information
  • Legal consequences and hefty fines for failing to protect sensitive data
  • Loss of trust from clients and stakeholders

If your business handles confidential data, public Wi-Fi should never be used for accessing or transmitting sensitive information.

How do hackers pose a threat through public Wi-Fi?

How hackers exploit public Wi-Fi:

  • Man-in-the-Middle (MITM) Attacks – Cybercriminals intercept the connection between your device and the internet to steal sensitive information like passwords, emails, or financial data.
  • Packet Sniffing – Hackers use special software to capture and analyse data transmitted over an open Wi-Fi network.
  • Evil Twin Networks aka evil twin attacks – cybercriminals create fake Wi-Fi networks that look legitimate tricking users into connecting and exposing their credentials.

Imagine you’re in an airport and see two Wi-Fi networks:

One called “Airport Free Wi-Fi” and another called “Airport Wi-Fi Secure”.

They both sound legit, but one of them could be a fake network set up by cybercriminals.

Once you are connected to the fake network, scammers can monitor everything you do online.

They can also steal your cookies and gain access to your login details and personal information. Some truly savvy hackers are even capable of installing malware on your device without you clicking anything. Now, that is scary!

So, you can see how easy it is for hackers to access everything you do on your device.

If you send emails, log in to company portals, or make financial transactions on public Wi-Fi, your sensitive business data could be at risk.

What are the different ways hackers pose a threat through public Wi-Fi?

Password Theft and Credential Hacking

Logging into your business accounts on public Wi-Fi exposes your credentials to hackers. If an attacker intercepts your login details, the same way they can access your personal information they can:

  • Gain unauthorised access to business systems and emails
  • Compromise customer data, leading to potential legal issues
  • Launch phishing attacks using your identity
  • Steal financial information if you use online banking or payment portals

Many businesses rely on password-protected services, but if hackers get hold of your login details, they can infiltrate your systems without your knowledge.

 

  1. Malware and Ransomware Risks

Some public Wi-Fi networks are compromised with malware that automatically infects connected devices. When you connect, you could unknowingly download malicious software, leading to:

  • Ransomware attacks – Hackers encrypt company files and demand payment to restore access.
  • Spyware and keyloggers – Cybercriminals track everything you type, including passwords and confidential business information.
  • Botnet infections – Your device could be hijacked and used to carry out cyberattacks.

Even innocently browsing the web on public Wi-Fi can expose you to malware if the network is compromised.

 

  1. Business Email Compromise (BEC) Attacks

Public Wi-Fi makes Business Email Compromise (BEC) easier for attackers. Cybercriminals can intercept email communications and impersonate executives, employees, or vendors to:

  • Trick businesses into sending money to fraudulent accounts
  • Send fake invoices to clients
  • Request sensitive business data under false pretences

BEC scams have cost businesses billions globally, and public Wi-Fi makes these attacks easier to execute.

Cyber Security Basics for Beginners Free Guide

If you’ve got this far, you are concerned about cybersecurity. Keep yourself super safe and download our free cybersecurity guide

Click here to view now!

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Agnes Syn-Star Content writer

Agnes Molnar

Agnes is Syn-Star’s expert content writer, she has  Master’s degree in English Literature that provides a strong foundation in writing and critical thinking of everything she does.

Qualifications: Masters in English Literature

In-house training: HubSpot SEO, WordPress Training.

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Agnes Syn-Star Content writer

Agnes Molnar

Agnes is Syn-Star’s expert content writer, she has  Master’s degree in English Literature that provides a strong foundation in writing and critical thinking of everything she does.

Qualifications: Masters in English Literature

In-house training: HubSpot SEO, WordPress Training.

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