A VPN encrypts the connection between your device and its server. It reduces exposure on the local network, but does not replace HTTPS, updates, or vigilance against phishing.
Before you log in
- ask the exact name of the network at the establishment;
- disable automatic connection to open networks;
- Keep the system, browser and applications up to date;
- enable authentication with two factors on important accounts.
During connection
Enable the VPN before opening your sensitive applications. Check that the tunnel is well connected and that sites use HTTPS. Avoid bypassing a certificate warning: it can report an interception or poor configuration.
What the VPN protects
The VPN hides your traffic to the local Wi-Fi network and replaces your public IP address with that of the VPN server. It is particularly useful on a shared network or when you want to use a French IP address during a trip.
What a VPN doesn't protect
- a false site to which you voluntarily transmit your password;
- a malicious file downloaded and executed;
- tracking when you are logged in to an account;
- an application or device already compromised.
After use
Disconnect the public network, disable its automatic reconnection option and remove it from stored networks if you do not intend to reuse it. Check your account login alerts for unusual behavior.
Published on 1 August 2026.