The "2.1" designation typically refers to a specific, older iteration of the extension's development cycle. The tool was known for being relatively straightforward to set up, allowing users to share their connection with others via social networks or messaging apps.

(e.g., Windows, Linux)?

If the tool actually functions as a proxy, it routes your internet traffic through a server controlled by the attacker. They can intercept unencrypted data, inject malicious advertisements into your browser, or redirect you to phishing websites designed to mimic your online banking login portal. How to Handle and Verify Suspicious Files

Assume you have a local web app listening on localhost:3000 .

This mechanism was intended to make it difficult for ISPs or governments to detect or block the proxy usage, as the traffic appeared to be coming from a trusted, private residential IP address. Features and Functionality