Hacker case is a challenge as authorities try to retrace suspect's steps in cyberspace _________________________________________________________________ (c) Copyright the News & Observer Publishing Co. Kevin Mitnick, suspected computer hacker, makes his entrance at the U.S. Courthouse in Raleigh, N.C., for a first appearance hearing Friday. By Sarah Avery RALEIGH (10 p.m.) -- Kevin Mitnick was shackled as he came into U.S. District Court on Friday, but the case against the alleged computer hacker might be a good deal more difficult to lock up. Proving Mitnick was behind the raids on data banks and thefts of at least 20,000 credit card numbers from computer systems across the nation will be a special challenge involving retracing the alleged hacker's steps in cyberspace. And while federal authorities are relatively inexperienced in the complicated machinations of computer burglars, they are gaining expertise. "We'll view this like other technical cases," said John Bowler, the assistant U.S. attorney in Raleigh who's assigned to prosecute Mitnick. "We'll employ expert witnesses and try to lay out the activity on charts." Bowler said investigators will piece together Mitnick's activities using computer system billings and other means. Evidence -- much of it in databases and computer systems from Raleigh to Colorado to California -- must be sorted. When federal agents descended on Mitnick's apartment this week, they hauled off an array of computer gadgetry. The traces of break-ins and security breaches that might be stored on Mitnick's equipment would be significant for the government's case. What evidence the government currently has against Mitnick remained undisclosed Friday after Mitnick declined to have the case against him spelled out. Mitnick, 31, also said he didn't want bond set. For now, he will be housed in a jail somewhere in Eastern North Carolina -- wherever space is available. Wallace W. Dixon, a U.S. magistrate, allowed Mitnick to make occasional calls to his mother, grandmother and a lawyer in California -- but only with the assistance of jailers. When Mitnick was arrested in 1987 in California, he was denied access to telephones for fear he would commit more crimes from prison. As Mitnick walked into the courtroom, his brown, wavy hair pulled back into a ponytail, he scanned the crowd of national reporters and locked his eyes on his archrival, Tsutomu Shimomura -- the man widely credited with cracking the case. Shimomura has said that Mitnick became increasingly sloppy in his hacking, and officials were able to trace him to Raleigh earlier this week. On Wednesday morning, authorities raided Mitnick's apartment, which he had rented Feb. 4, at The Players Club complex. Mitnick was charged with computer fraud and access device fraud -- federal felonies that carry a maximum prison term of 35 years. Although Mitnick was arrested in Raleigh, officials said Friday they are uncertain whether he will be tried here. Charges could be consolidated with others in California and Colorado, and his case could be settled there. If Mitnick is tried here, Bowler said, the government has a strong case against him, which he said would have been outlined Friday had Mitnick not waived that option. Bowler said he himself is not an expert in computer crimes, despite having been assigned to the case. Bowler is scheduled to attend a Justice Department seminar to gain some expertise. James Walsh, an FBI agent specializing in white-collar crime, said Friday that the FBI only three years ago set up a Computer Crimes Squad in Washington. The squad investigates sophisticated crimes throughout the nation since many field offices lack the skills to conduct the probes. "To some extent it's true that we've been ill-prepared," Walsh said. "But we're trying to catch up." Dan Boyce, a former U.S. attorney who has started a private law practice in Raleigh specializing in computer crimes, said law enforcement agencies are unprepared to deal with the growing problem that sophisticated hackers present. "Computer crime is the crime of the '90s," Boyce said. "You've heard the old expression that it's easier to rob a bank with a pen than with a gun, and now it's even easier to rob a bank with a computer because of the ability to gain access to information without being noticed." While Mitnick's breaches were brash -- signaling what experts have said was a desire to draw attention to his prowess -- security infractions can go undetected.