CreditSignal is a free tool provided by Dun & Bradstreet that offers alerts to changes in a company's credit scores and ratings. It monitors four key scores: D&B PAYDEX® Score, Delinquency Predictor Score, Financial Stress Score, and Supplier Evaluation Risk Rating. Users receive email alerts whenever there are changes to these scores, helping businesses stay informed about their credit profile. The service is free for 14 days, after which it provides directional changes to the scores. For more detailed monitoring, users can upgrade to CreditSignal Plus or other paid services.