Final answer:
A Virtual Private Network (VPN) is an effective tool to increase privacy and security when using an insecure Wi-Fi network.
Step-by-step explanation:
An effective tool to increase privacy and security when using an insecure Wi-Fi network is a Virtual Private Network (VPN). A VPN creates a secure encrypted connection between your device and the internet, making it difficult for anyone to intercept your data or track your online activities.
When you connect to a VPN, all your internet traffic is routed through a secure server, which hides your IP address and encrypts your data. This means that even if someone tries to intercept your data on an insecure Wi-Fi network, they won't be able to read it without the encryption key.
For example, let's say you're using an open Wi-Fi connection at a café. Without a VPN, anyone connected to the same network could potentially see your online activities, including your passwords, emails, and browsing history. However, if you use a VPN, your data is encrypted, and the VPN server acts as a middleman between you and the internet, keeping your online activities private and secure.