VPN on Public Wi-Fi
Every time you connect to free Wi-Fi without a VPN, you're taking a risk. Here's what's at stake and how to protect yourself.
In this guide
The Risks of Public Wi-Fi
Public Wi-Fi networks at coffee shops, airports, hotels, and libraries are prime targets for attackers. Common threats include man-in-the-middle attacks (intercepting your traffic), evil twin hotspots (fake networks that mimic legitimate ones), packet sniffing (reading unencrypted data), and session hijacking (stealing your login cookies).
How a VPN Protects You
A VPN encrypts all traffic between your device and the VPN server. Even if an attacker intercepts your Wi-Fi traffic, they see only encrypted data — indistinguishable from random noise. Your real IP address is hidden, your DNS queries are encrypted, and your browsing activity is invisible to anyone on the same network.
CasperVPN's Auto-Connect Feature
Enable Auto-Connect in CasperVPN settings to automatically activate your VPN whenever your device joins an untrusted Wi-Fi network. Combined with the kill switch, this ensures you're never exposed — even for a split second.
Frequently Asked Questions
Is HTTPS enough on public Wi-Fi?
HTTPS encrypts web traffic, but not all apps use it consistently. A VPN encrypts everything — including DNS queries and app traffic that might leak data.
Does a VPN slow down public Wi-Fi?
Modern protocols like WireGuard add minimal overhead. You likely won't notice any speed difference on a typical public Wi-Fi connection.