Identify if they use ads, premium upsells, or data sharing to fund the "free" version.
According to experts at Cloudflare , VPNs use protocols like IPsec or SSL/TLS to encode data, ensuring it remains unreadable to intercepted parties. amanvpn-free-vpn-protects-data-privacy
Many free VPNs log user activity and sell it to third-party advertisers to cover operating costs, which fundamentally contradicts the goal of privacy. Identify if they use ads, premium upsells, or