You are on vacation, your mobile data is running low, and you find free Wi-Fi at your hotel, airport, or café: can you connect without worrying? Is it safe to check your bank account while waiting for a flight? And if you need to make a payment, enter a password, or use a credit card, could someone intercept what you are doing? Most importantly, how can you tell whether a public Wi-Fi hotspot really belongs to the place you are visiting or was created by someone with malicious intentions?
These are reasonable concerns. When traveling, we use smartphones and laptops constantly for maps, bookings, emails, electronic tickets, payments, and documents. Free public access points are therefore extremely convenient, but convenience and security are not always the same thing.
This does not mean that every public Wi-Fi network is a trap. Today, the majority of websites use HTTPS, and many communications are encrypted. However, risks still exist, especially with fake networks, insecure configurations, phishing attempts, and outdated devices. So let us look at public Wi-Fi network security without unnecessary alarmism, but with the right level of caution.
Why public WiFi can be risky
Hotels, campsites, airports, railway stations, restaurants, shopping centers, and beach resorts often provide a public Wi-Fi network so customers can access the Internet without using their mobile data allowance.
The main difference compared with your home network is that you do not necessarily know who manages those access points, how they are configured, or which security measures are in place.
Many strangers can also be connected to the same public Wi-Fi networks at the same time. This does not mean that anyone can automatically read your passwords or messages: HTTPS protects a large amount of Internet traffic. However, fake hotspots, insecure settings, and interception attempts remain possible.
For this reason, public Wi-Fi and security risks should be approached with balance. There is no need to fear every free network, but it is equally unwise to assume that a Wi-Fi connection is safe simply because it is easy to access.
Beware of fake public Wi-Fi hotspots
One of the easiest risks to understand involves public Wi-Fi hotspots deliberately created to look legitimate.
Imagine that you are staying at a hotel called “Hotel Aurora” and your phone displays two available networks: “Hotel Aurora WiFi” and “Hotel Aurora Free WiFi.” Which one actually belongs to the hotel?
From the name alone, it may be impossible to know. Someone with the right tools may be able to create a hotspot using a name that closely resembles the official network.
Before connecting, it is therefore a good idea to ask reception staff, restaurant employees, or airport personnel for the exact network name. A Wi-Fi network is not automatically trustworthy just because its name includes the name of the hotel or business you are visiting.
What are Man-in-the-Middle attacks?
Among the risks traditionally associated with public Wi-Fi are Man-in-the-Middle attacks.
In simple terms, this happens when an attacker tries to place themselves between your device and the online service you are using in order to intercept or manipulate communications.
This does not mean that someone can automatically see everything you do simply because you are connected to airport Wi-Fi. The widespread use of HTTPS encryption has significantly improved the protection of online communications.
When the connection to a website correctly uses HTTPS, the information exchanged is encrypted while traveling between your device and the website. For this reason, you should never ignore browser warnings about invalid certificates or insecure connections.
There is also another important point: the padlock icon and HTTPS mean that the connection is encrypted, but they do not guarantee that the website itself is trustworthy. A phishing website can also be protected by HTTPS. Before entering login details or sensitive information, always check the website address and identity.
Passwords, credit cards, and sensitive data
Not all online activities carry the same level of risk. Checking the weather forecast is very different from entering credit card details, logging into online banking, or opening confidential work documents.
If you are unsure whether a network is trustworthy, avoid accessing especially sensitive services or temporarily switch to your mobile data connection. The same caution should apply when handling personal data, passwords, business documents, administration panels, or other personal information belonging to clients.
This is especially important for people who work while traveling. A business laptop may contain access to cloud services, company email, management platforms, or confidential files that deserve greater protection than ordinary web browsing.
Is a VPN useful on vacation?
A Virtual Private Network, usually called a VPN, creates an encrypted connection between your device and the VPN service. It can therefore provide an additional layer of protection when you have to use a network you do not control.
However, a VPN does not make every online behavior automatically safe. You still need to choose a reliable provider and remain alert to phishing, fake websites, and suspicious requests for login credentials.
For example, if you voluntarily enter your password into a fake banking page, the VPN cannot stop you from giving that information to a scammer. Technology helps, but it does not replace user awareness.
When mobile data is the better choice
For certain activities, the simplest solution is often the most effective: turn off Wi-Fi temporarily and use your smartphone’s 4G or 5G connection.
This can be a sensible choice when making a banking transaction, changing a password, opening confidential documents, or accessing business services containing sensitive data.
If you are traveling with a laptop, you can also use your smartphone as a personal hotspot. Your computer will then use your phone’s mobile connection instead of the public Wi-Fi provided by the hotel, café, or airport.
Mobile networks are not completely free from security risks either, but this approach at least avoids relying on a public access point whose configuration and management are unknown to you.
Turn off automatic Wi-Fi connections
Smartphones and computers can remember networks you have previously used and, depending on their settings, may try to reconnect automatically.
When traveling, it is a good idea to review these settings. Once you leave a hotel, airport, or café, you can remove the network if you do not expect to use it again and switch Wi-Fi off when you do not need it.
This is a simple precaution, but cybersecurity often depends on a combination of small, sensible habits. It is also worth checking which networks are already stored on your phone. You may find old connections that you used years ago and no longer need.
Updates and two-factor authentication
Protecting the connection is not enough if the device itself contains known vulnerabilities. Before traveling, make sure your smartphone, tablet, and computer are up to date.
You should also update your browser and applications and use strong, unique passwords for your most important accounts.
Two-factor authentication is especially useful because even if someone manages to obtain your password, they may still lack the additional verification required to access the account. Email, cloud services, and professional tools containing sensitive information should be among the first services where you enable it.
Is hotel Wi-Fi with a password safe?
A password is certainly better than a completely open network, but it is not an absolute guarantee of security.
If the same password is given to hundreds of guests and remains unchanged for months, that network should not be treated in the same way as your private home Wi-Fi.
A simple rule can help: the more important the information you are about to transmit, the more cautious you should be.
For reading the news or checking restaurant opening times, hotel Wi-Fi may be perfectly adequate. If you need to use credit cards, administrative login details, or confidential documents, however, mobile data and, where appropriate, a reliable VPN may be a better choice.
Public Wi-Fi should not become a source of fear
When discussing public Wi-Fi network security, it is easy to become overly alarmed. That is not necessary.
Modern HTTPS encryption and other security technologies make browsing much safer than it was in the past. However, the level of caution you use should still reflect the sensitivity of what you are doing online.
Before connecting, verify the exact name of the public Wi-Fi hotspot, do not ignore browser security warnings, keep your devices updated, and enable two-factor authentication. For especially sensitive activities, use mobile data whenever possible or consider a trustworthy VPN.
Technical concepts such as IP addresses, encryption, and security protocols may sound complicated, but you do not need to become a cybersecurity expert. A few careful habits can significantly improve your safety while traveling.
This post is also available in: Italiano (Italian)