Three men have been indicted on charges of hacking into Comcast's e-mail and voice-mail service for its Internet customers during two days last year, federal prosecutors announced yesterday.

Using the screen names Defiant, Slacker, and EBK, and associated with a hacker group called Kryogeniks, the men redirected customers to a site that said, "KRYOGENIKS Defiant and EBK RoXed COMCAST sHouTz to VIRUS Warlock elul21 coll1er seven," prosecutors said

The three were identified as Christopher A, Lewis, 19, of Newark, Del.; James R. Black Jr., 20, of Tumwater, Wash.; and Michael P. Nebel, 27, of Kalamazoo, Mich. Lewis went by EBK, Black was Defiant, and Nebel was Slacker, prosecutors said.

They are charged with conspiring to disrupt service at www.comcast.net on May 28 and 29, costing Comcast about $128,000, the U.S. Attorney's Office in Philadelphia said. A company spokesman declined to discuss how the three accessed the Comcast network. - Nathan Gorenstein