Hearst is the latest broadcaster suing Aereo. About 2 months after Aereo launched its service in Boston, Hearst filed a lawsuit against the streaming service in the US District Court for the District of Massachusetts. The broadcaster alleged the company violated copyright rules by retransmitting Hearst affil WCVB signals without permission. “If Aereo is permitted to profit from the unauthorized retransmission of copyrighted television programming, WCVB will be deprived of existing and potential revenue streams from advertising and authorized retransmissions,” according to court documents. A group of broadcasters including CBS and ABC sued Aereo last year in NY. Aereo wasn't immediately available for comment.