Due to the recently discovered security vulnerability affecting uTorrent we are no longer going to allow uTorrent 3.0 or above starting on the 5th of March. Older versions of uTorrent may no longer be allowed at a future date.

We recognize that some users have been using this client for more than a decade and have grown fond of its features. However, protecting the site and its users is a priority for us. We urge all uTorrent users to switch to an alternate client.

For all operating systems including Windows and Mac, we can recommend qBittorrent and Deluge.

For Linux, we can recommend Transmission and rTorrent. It's recommended to install them from your repo, not manually downloading the tarball.

On March 5th 2018 those changes will come into effect. Please migrate to one of the recommended clients before this date.

Required Workaround for uTorrent 2.2.1

You need to set the setting "net.discoverable" to false. You also need to deactivate the webgui. Source
Step by Step Instructions: Show

Important Information for Transmission Users

If you are using a Transmission version older than 2.93, you might be vulnerable to a similar exploit as the uTorrent users. We highly recommend updating to version 2.93 or above.

If you are using Transmission on Linux, your distribution repository might be backporting security updates. For example Ubuntu based distributions still come with Transmission 2.84, but the latest security patches have been applied. Please check the release history of your repo.

Migrating from uTorrent to another client

To make it as easy as possible for you to migrate to a different client while retaining your torrents, we have compiled some scripts and tutorials on the topic.
qBittorrent
Deluge
Transmission

If you have any further questions about this announcement, ask here.