Coffee shops, airports, and public parks often offer free, open Wi-Fi. It is convenient, but it is also an insecure environment where your data is broadcasted through the air. On an open network, other users on the same Wi-Fi can theoretically use "packet sniffing" tools to capture the data moving between your device and the access point.

Positioning the Middleman

Attackers frequently set up "rogue" Wi-Fi hotspots with names that mimic legitimate networks (e.g., "Airport_Free_Wi-Fi_Official"). When you connect to these hotspots, the attacker sits in the middle of your connection. They can redirect your banking website requests to a cloned site designed to capture your login credentials. Even if the website appears encrypted (HTTPS), sophisticated attackers can use tools to strip away security layers or present fake certificates.

Never conduct banking, shopping, or sensitive communication on public Wi-Fi without an encrypted tunnel. Using a trusted VPN service like Surfshark wraps your traffic in an encrypted tunnel, ensuring that even if someone manages to "sniff" your data on public Wi-Fi, they only see garbled, indecipherable code.