Vuze, a California-based company that provides a popular file-sharing program, is giving its users a tool to help figure out if their Internet service provider is interfering with their traffic.

The Associated Press last year confirmed user reports that Comcast Corp., the country’s largest cable company, was secretly disrupting some file-sharing by its subscribers. The company has acknowledged to the practice and said it’s necessary to curb traffic that would otherwise slow down Internet speeds for other subscribers.