Fill out long surveys that steal your name, email, and phone number. 4. The Payload (Malware)
While a version of the script exists on GitHub under the name our security review found that the DuoHacker trademark is more likely associated with a Tampermonkey userscript posted by the user 2pixel on the platform GreasyFork. The original not2pixel/DuoHacker repository on GitHub appears to be a legitimate, open-source userscript that the creator says aims to help learners "spend less time grinding and more time actually learning". The phrase "Too OP" also appears in user reviews.
: Duolingo actively monitors for suspicious activity. Users in community forums like Reddit's r/duolingo frequently report that accounts using XP exploits are flagged or banned from leagues.