Modified clients can be programmed to track your IP address or leak your browsing habits to third parties.
Integrated scanning of downloaded files.
While the allure of is understandable, the danger of downloading "haxn" patches far outweighs the benefits of the Pro features. For a fast, secure, and ad-free experience, switching to an open-source client like qBittorrent is the recommended path for most users in 2024.
Widely considered the best successor to uTorrent. It is open-source, completely ad-free, and includes a built-in search engine and sequential downloading (previewing files).