Copyright Lawsuit Is Turnabout for SCO By JOHN MARKOFF Published: October 13, 2003 AN FRANCISCO, Oct. 12 - The SCO Group, the company that touched off a computer industry slugfest last spring by suing I.B.M. over its use of Unix software, may find itself embarrassed by a similar claim against a company once related to SCO. Since filing a lawsuit claiming that I.B.M. added parts of the Unix operating system to the freely distributed Linux software, SCO has threatened other computer companies, the open source software movement and hundreds of corporations that rely on Linux, saying they are unfairly using...