The RIAA is sending out letters again, warning individuals

The RIAA learned of the swappers' identities after a
protracted legal battle with Verizon
Communications, which unsuccessfully fought
attempts to unmask its subscribers, citing concerns about privacy and
legal liability.

Four of the five persons whom the letters
targeted are the Verizon subscribers involved in the legal case. An RIAA
representative said on Thursday that the fifth recipient is a subscriber
of Internet service provider EarthLink, which agreed to turn over the
individual's name after an appeals court panel ordered Verizon to unveil
the identities of its piracy-suspected subscribers earlier this
month.

The RIAA would not identify the suspects'
names, nor would it comment on whether the subscribers had responded to
the letters or whether it planned to follow up with further legal
action.

The record labels have stepped up their pursuit of
individual file swappers in recent
months.