HackedList.io is a service that allows you to determine if your organization's or customers' data has been stolen by infostealer malware and made available on the darknet.

Without registration and for free, it allows anyone to check the status of their organization and find out if there has been a leak of login credentials associated with the specified domain in the past. More information is available upon registration. Paying customers are provided with all the details necessary for effective incident response, including consultation services.