 BBC News | Black Boxes Skew Ratings Wall Street Journal - The latest blow to the reputation of Moody's Investors Service in structured finance is the charge that it knew of a computer error that inflated the ratings of constant-proportion debt obligations, or CPDOs, and didn't disclose the problem. Moody's stock suffers record plunge on rating error Moody's Faces Scrutiny of Computer Error, Possible `Cover-Up' |