Cosmetics Giant Yves Rocher Caught in Data Leak Impacting Millions of Customers. International cosmetics brand Yves Rocher found itself caught in a third-party data exposure incident that leaked the personal information of millions of customers. Cosmetics giant Yves Rocher is warning that a giant data leak exposed the personal data of millions of its customers and reams of sensitive internal company information to the public. The data exposure stems from a database left unprotected by a third-party consultant to the firm. Third-party company: Aliznet.