Experts make defensive change to key U.S. Internet computers
Verisign Inc., which operates two of the root servers, moved one computer overnight Tuesday to a different building in an unspecified location in northern Virginia and onto a different part of its network, company spokeswoman Cheryl Regan said Wednesday.
Verisign said the change was designed to ensure that a hardware outage or focused attack targeting part of its network could not disrupt both servers.
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