5 Ways to Stay Safe on a Public Network

In a connected world, we rely on public networks, such as Wi-Fi hotspots at cafes, airports, hotels, and public libraries, for convenient internet access. While these networks offer immense convenience, they also pose significant security risks. Public networks are often unencrypted or poorly secured, making it easier for malicious actors to intercept your data, hack into your device, or compromise your privacy. To mitigate these risks, it’s essential to follow certain safety measures when using public networks.

Use a Virtual Private Network (VPN)

A) One of the most reliable ways to secure your internet connection on a public network is by using a Virtual Private Network (VPN). A VPN works by creating a secure, encrypted connection between your device and a server, which effectively hides your internet traffic from any prying eyes. When you use a public network, the data transmitted from your device, including emails, passwords, and credit card information, can be intercepted by hackers through methods like packet sniffing. A VPN prevents this by encrypting your data, even if the public network is unsecure.

B) VPNs also help to anonymize your online activities by masking your IP address, making it harder for third parties to track your browsing habits. This is especially important in public spaces where you may be vulnerable to surveillance. Additionally, VPNs can bypass geo-restrictions, allowing you to access content that may be blocked or censored in certain regions.

C) To ensure you’re protected, it’s essential to use a reputable VPN service that offers robust encryption standards (such as AES-256) and a no-logs policy, ensuring that your activities are not stored or monitored. Free VPNs may seem tempting, but they often come with drawbacks like slower speeds, limited servers, and even the possibility of logging your activities for sale to third parties. Therefore, investing in a paid VPN service is a smart choice for safeguarding your data on public networks.

Enable Two-Factor Authentication (2FA)

A) Another important security measure when using public networks is enabling two-factor authentication (2FA) for your online accounts. 2FA provides an additional layer of protection beyond just a password, ensuring that even if your login credentials are compromised, a hacker will still need access to a second form of identification to access your account. This second form could be a code sent to your phone, a biometric scan, or a hardware security key.

B) Public networks are particularly vulnerable to attacks like phishing, where cybercriminals use fake websites or apps to trick users into entering their login credentials. By enabling 2FA, you add a significant barrier to entry, making it more difficult for attackers to gain access to your sensitive accounts, even if they manage to steal your username and password. Most major platforms, such as Google, Facebook, and online banking services, offer 2FA as an option, so it’s advisable to enable this feature wherever possible.

C) For extra security, consider using an authenticator app, like Google Authenticator or Authy, instead of relying on text messages, as SMS-based authentication can be vulnerable to SIM card swapping or interception.

Turn Off File Sharing and Public Discovery Settings

A) When connecting to a public network, it’s crucial to adjust your device settings to minimize exposure to potential threats. One of the most important settings to modify is file sharing. By default, many devices may have file sharing turned on, allowing others on the same network to access and potentially exploit your files. This is especially dangerous on public Wi-Fi networks, where anyone can connect and attempt to access your personal data.

B) To safeguard your privacy, make sure to turn off file sharing and disable the ability for other devices to discover yours on a public network. On Windows, for example, you can switch your network profile to “Public” in the network settings, which disables file and printer sharing. For macOS, navigate to “System Preferences” and disable the “File Sharing” option under “Sharing.” Additionally, ensure that your computer’s firewall is enabled to block unauthorized access to your device.

C) Similarly, if you are using mobile devices, you should ensure that features like Bluetooth and Airdrop are turned off when you’re not using them, as these features can also be exploited by attackers on public networks.

Avoid Accessing Sensitive Information

A) While using public Wi-Fi, it’s essential to avoid accessing sensitive information or performing high-risk activities. Public networks are notoriously insecure, making them a prime target for cybercriminals to intercept and steal data. As such, it’s prudent to refrain from logging into sensitive accounts, such as banking apps, credit card portals, or any site requiring personally identifiable information (PII), when connected to a public network.

B) If you absolutely need to access sensitive information, ensure that you are using a secure website (look for “https” in the URL, which signifies encryption) or connect through a VPN to add an extra layer of protection. Even so, it’s better to wait until you’re on a private, secure network before accessing banking sites, online shopping platforms, or email accounts.

C) Additionally, try to avoid activities like making online purchases or filling out personal forms while on public Wi-Fi. These actions involve the transmission of sensitive financial and personal data, which could easily be intercepted if the network is compromised. By saving such activities for a safer environment, you can minimize your risk of falling victim to cyberattacks.

Use Antivirus Software and Keep Your Device Updated

A) A strong line of defense when using public networks is to ensure your device is protected with up-to-date antivirus software and that all software updates are installed regularly. Cybercriminals often use public networks as a launching pad for attacks, distributing malware or viruses via malicious links, downloads, or infected software. Having antivirus software installed on your device helps to detect and block these threats before they can cause harm.

B) Regular updates are equally important, as they often include security patches that address known vulnerabilities in the operating system or apps you use. Keeping your software up to date ensures that any potential security holes are closed, making it more difficult for hackers to exploit your device.

C) Most modern antivirus programs also include features such as web filtering, which can block access to harmful websites or alert you when you’re about to visit a suspicious link. Additionally, some antivirus solutions offer a firewall, which helps monitor and block unauthorized network activity. These additional security features make antivirus software an indispensable tool for staying safe on a public network.

Partnering with a Trusted MSP

While public networks offer undeniable convenience, they also introduce significant security risks that can compromise your personal data, privacy, and safety. By following the five methods outlined in this essay—using a VPN, enabling two-factor authentication, disabling file sharing, avoiding sensitive transactions, and using antivirus software—you can significantly reduce your exposure to these risks. The key is to remain vigilant and adopt good cybersecurity habits to protect yourself, especially when using unsecured networks. In an age where cyber threats are becoming increasingly sophisticated, taking the necessary precautions when connecting to public Wi-Fi is not just advisable, but essential for safeguarding your digital life. Here at Entre, we are guided by three core values that encapsulate our ethos: Embrace the Hustle, Be Better & Invest in Others. These values serve as our compass and are what guide our business model and inspire us to create successful and efficient solutions to everyday IT problems. Contact us for a free quote today!