As an accounting firm, we are very attentive to the protection of our clients’ data. In this context, we want to share this article written by our IT manager to help you guard against the growing risk of cyber-attacks.
Public Wi-Fi networks are multiplying: airports, shopping centers, hotels, and even in public spaces like parks. These free and convenient connections allow you to stay connected in all circumstances, but there are hidden risks.
Behind this apparent convenience lie serious threats that could compromise the security of sensitive information.
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I – The Risks Inherent in Public Wi-Fi Networks
Understanding the threats associated with using public Wi-Fi is essential for protecting our data.
Here are the risks to keep in mind:
1 – Man-in-the-Middle (MITM) Attack
Hackers can quietly insert themselves into the communication between your device (PC, phone) and the visited site. They can then intercept and read all your exchanged information, whether it’s professional emails, passwords, or online transactions.
2 – Rogue Hotspot
Cybercriminals can create fake Wi-Fi networks that resemble legitimate ones (e.g., “Free_Coffee_Wi-Fi”). Once connected, they can monitor your online activities and access your confidential information.
3 – Unsecured File Sharing
Devices connected to a public network may have file sharing enabled by default. This opens a door for hackers to access your documents, install malware, or modify your company’s files.
4 – Theft of Credentials and Passwords
On an unsecured network, cybercriminals can capture your login credentials, especially if you browse sites without HTTPS protocol. This information can be exploited for targeted attacks or fraud.
5 – Infection by Malware or Spyware
Hackers use public networks to spread malware or spyware directly onto your device through advertisements or automatic downloads.
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II – Essential Security Measures
To avoid these risks, preventive measures can be implemented. Here are some best practices to adopt:
1 – Use a VPN (Virtual Private Network)
A VPN encrypts the user’s connection, making the data unreadable to anyone trying to intercept it. This is an essential solution for employees who travel frequently or work remotely.
2 – Limit Sensitive Activities
Avoid making bank transactions, accessing professional emails, or using applications with sensitive information when on a public network.
3 – Check for HTTPS Presence
Ensure that the sites you visit use the HTTPS protocol, which guarantees that exchanged information is encrypted.
4 – Disable Automatic Connection to Wi-Fi Networks
Most devices automatically connect to known or open Wi-Fi networks. Disable this option in your professional device settings to avoid unintentional connections.
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III – Why Is It Important?
Cybersecurity is everyone’s responsibility.
Negligence, even on a public Wi-Fi connection, can lead to leaks of strategic information, financial losses, and damage to the company’s reputation.
Raising awareness among employees about good security practices, equipping devices with adequate protection (like a VPN), and implementing a proactive cybersecurity policy are essential measures to prevent these risks.
Article written by Jean-Baptiste Lance, IT Manager at French Business Advice