What.cd

What.cd, also known as WCD, operates as a private BitTorrent tracker. The service specializes in the distribution of music content. Its headquarters are located in the United States of America. The organisation is recognised by the aliases What.cd and WCD. As a private tracker, access to its content is restricted to registered users. The platform functions as a peer‑to‑peer index for music files shared via the BitTorrent protocol.

On January 6, 2014, What.cd was targeted by a distributed denial‑of‑service attack. The attack also affected two other major private BitTorrent trackers. The sustained traffic overwhelmed the sites, resulting in extended downtime. In response, one of the affected trackers implemented IP null‑routing to mitigate bandwidth costs. No individual or group claimed responsibility for the incident. Historical context suggested possible motives such as anti‑piracy sentiments, competition, or personal grievances. The pattern of the attack resembled earlier incidents linked to an individual who had previously been denied access to similar platforms. No further details about the organisation's size, ownership, or structural relationships are provided in the available sources.