Frequently, warez groups utilize connections with fast upstream speeds in order to mass distribute their releases (usually ISOs compressed in either RAR or TAR format). XDCC is quickly gaining popularity over older methods of computer piracy such as newsgroups and fserve. Unlike peer-to-peer transfers, XDCC is often hosted on connections with massive upstream bandwidth, the most popular dumps (server computer with pirated software) are usually connected to sites with 100Mbit connections or .edus.

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