Recent research has identified that 20 free VPN applications on Google Play share the same underlying code and a common vulnerability that compromises user data encryption. The study, conducted by researchers from Bowdoin College and Arizona State University, analyzed these apps, which have over 700 million downloads and generate revenue through ads while offering minimal value to users. Notable VPNs included in the study are Tetra VPN, VPN PotatoVPN, and VPN Proxy Master. These applications may mislead users into thinking they have diverse options, but they provide a uniform experience. Additionally, there are concerns about potential vulnerabilities that could expose private data and possible ties to China, a country known for weak privacy protections. The examined VPNs include Turbo VPN, VPN Monster, Snap VPN, and others. In contrast, established VPNs like Proton VPN and NordVPN are noted for their reliability and security.