Don't worry though -- your bandwidth is safe.
By Tim Colwill on March 13, 2013 at 8:44 pm
CCP are announcing that EVE Online is set to move their launcher and client distribution service to a BitTorrent model, hoping it will reduce data errors and failed downloads.
“The main reason why we are doing this is that BitTorrent itself can utilize a number of different transport channels at the same time and is thus less prone to failing,” writes CCP Aporia on the dev blog.
Worried about the new launcher stealing your bandwidth with sneaky uploads? Don’t be! “By default the new EVE Launcher will only make you share the data required for installing the client while you are downloading; once your download is complete you will not be distributing it to others, unless you explicitly enable this in the options.”
This will be coming to the test server shortly, and thence to your local install.
Source: EVE Online