What is 'credential stuffing' and how is diupdateid.site related to it?

Credential stuffing is a type of cyberattack where attackers use stolen usernames and passwords (often obtained from sites like diupdateid.site) to attempt to log into other accounts. Because many people reuse passwords, a breach on one site can compromise accounts on many others. diupdateid.site provides the 'fuel' for credential stuffing attacks.