A Kansas man has sued Facebook, claiming the social media company violated wiretap laws with a tracking cookie that records users’ web browsing history after they log off the site.

John Graham, a 42-year-old Leawood lawyer, is the named plaintiff in the lawsuit filed Wednesday in U.S. District Court in Kansas. His suit seeks class action status for the 150 million users of Facebook in the United States.

The lawsuit seeks an injunction prohibiting Facebook from intercepting electronic information from users when they are not logged in.

Experts say Graham faces an uphill battle because courts have dismissed similar lawsuits alleging wiretap violations. In case that have been litigated, plaintiffs have often been unable to prove any monetary harm.