They start young these days: a 12-year-old hacker in Detroit has been arrested in leafy Grosse Isle and accused of gaining access to TRW Inc’s credit rating computers, and distributing the charge card numbers he found there on bulletin boards; the boy’s mother told Associated Press that the kid spent up to 14 hours on his machine at weekends – He didn’t bother me, he sat there on his computers – well I figured, computers, that’s the thing of the day, she declared.