IMesh

iMesh was a media and file sharing client that was available in nine languages. It used a proprietary, centralized, P2P network (IM2Net) operating on ports 80, 443 and 1863. iMesh was owned by American company iMesh, Inc., who maintained development centers around the world. As of 2009, it was the third most popular music subscription service in the US. iMesh operated the first "RIAA-approved" P2P service, allowing users residing in the United States and Canada to download music content of choice for a monthly fee in the form of either a Premium subscription or a "ToGo" subscription. This subscription-based approach is advocated by theories such as the Open Music Model. A third option was also available for users (residing in either country) to permanently purchase tracks for 99 cents (USD) each, without a subscription. In September 2013, the website of iMesh was hacked and approximately 50M accounts were exposed. The data was later put up for sale on a dark market website in mid-2016 and included email and IP addresses, usernames and salted MD5 hashes.