Someone We Know de Shari LapenaMaybe you don't know your neighbors as well as you thought you did . . . This is a very difficult letter to write. I hope you will not hate us too much. . . My son broke into your home recently while you were out. In a quiet, leafy suburb in upstate New York, a teenager has been sneaking into houses and into the owners' computers as well learning their secrets, and maybe sharing some of them, too. Who is he, and what might he have uncovered? After two