Early in his career, Cohen worked as a public interest lawyer in New York and also for the Southern Poverty Law Center in Montgomery, Alabama. Cohen used to work as a senior writer for TIME magazine for seven years and was a former member of the New York Times editorial board. He began working for the New York Times in 2002 and his work focused on tech and legal affairs. He currently teaches courses in media and internet law at Yale Law School. He writes a legal column which appears on TIME.com every Monday.