On September 13, 2005, ASVA investigators and the Police seized 4 FTP servers containing 15
terabytes of audiovisual content from ISP data centers in Budapest. The raid followed five months of
investigation. The system, called “Kenyer,” was highly sophisticated, and the four “content servers”
(three at the Interware ISP and one at the Thenet ISP) were protected by eight proxies (located in
different Hungarian hosting facilities). End users only knew of the existence of the proxies and
downloaded content from them. Sophisticated route balancing techniques were used to hide the origin of the files. The system was community-driven, with approximately 1,600 active members
exchanging files. New members had to be recommended by at least two existing members and a
download to upload ratio of 1:5 was also required. A communication server (private instant
messaging among users) containing thousands of e-mail addresses was also discovered in the
operation and is currently under further investigation. Immediately following the raid, outgoing traffic at the Interwave ISP dropped by about 700 Mbps and total Internet traffic between all Hungarian ISPs dropped by nearly 20%.