The file likely refers to a archived version of uProxy , an open-source browser extension designed to help users bypass internet censorship . The uProxy Origin Story
: Jigsaw eventually ended support for uProxy, transitioning their focus to newer tools like Outline . Safety Note uProxy_1.81.rar
The project was highly active in the mid-2010s, with official releases tracked on GitHub . However, the specific version "1.81" is unusual because: The file likely refers to a archived version
Originally led by researchers at the and supported by Google Ideas (now Jigsaw), uProxy was built on a "peer-to-peer" concept. Instead of connecting to a commercial VPN, you would connect through the internet connection of a trusted friend in another country. This made it much harder for censors to block, as the traffic appeared to be a simple one-on-one video call or chat session. Why "1.81.rar"? However, the specific version "1