Tech

By GREGORY ZELLER // The U.S. Department of Justice is looking to shut down several “gateway carriers,” including several based on Long Island, accused of helping illegal international robocalls reach American consumers. And the Island’s own champion of robo-blocking may have helped the feds crack the case. The Justice Department filed civil actions Jan. 28 in two separate cases targeting five companies, alleging three defendants – including Jon Kahen of Great Neck, owner of Global…