A VPN increases privacy by masking your IP address and routing your connection through an encrypted network, shielding data from hackers, advertisers, and internet service providers. While it is not a complete cybersecurity solution, keeping it on 24/7 offers continuous protection. Public Wi-Fi networks are the primary scenario where VPNs provide essential security, preventing snooping on open networks or fake hotspots at locations like coffee shops and airports.

These networks create an encrypted tunnel that protects data from cybercriminals lurking in public spaces. Additionally, VPNs prevent internet service providers from collecting and selling browsing habits, as highlighted in an FTC study. They also serve as a useful tool for accessing region-locked content, such as American streaming services abroad, and can unlock country-specific catalogs on platforms like Netflix.

For those accessing sensitive information, such as email or bank accounts, a VPN acts as a backup layer to help prevent man-in-the-middle attacks, though it does not protect against phishing or weak passwords.