Hewlett Packard Enterprise is investigating a data breach after a well-known hacker claimed to have stolen sensitive information from the company. The hacker, who uses the alias “IntelBroker,” claims to have stolen a trove of data from HPE, the enterprise IT division of hardware giant HP.

“HPE immediately activated our cyber response protocols, disabled related credentials, and launched an investigation to evaluate the validity of the claims,” the company told TechCrunch in a statement. “There is no operational impact to our business at this time, nor evidence that customer information is involved.”