NEW YORK (AP) — The Social Security numbers and other personal information of about 15,000 New York City transit workers has been found on a CD inside a refurbished computer sold by a retailer, according to a letter obtained by The Associated Press.

“While we do not suspect nor have seen any evidence of misuse of the data, every precaution is being taken to ensure that this is the case,” the March 6 letter from Metropolitan Transportation Authority Chief Information Officer Sidney Gellineau said.