In an escalating contest that pits notorious computer hacker Kevin Mitnick against the U.S. Probation Department in Los Angeles, First Amendment expert Floyd Abrams is throwing his considerable influence behind Mitnick.

“I expect to be making a submission on behalf of Contentville.com,” Abrams says, referring to a media Web site that sought to hire Mitnick as a columnist before probation officials ordered him off the journalism and lecture circuits April 12.