US Patent 11489829 Automatic account protection for compromised credentials

A method may include receiving a data file including a plurality of tuples, each respective tuple including a username and password; matching a username from a tuple in the data file to a username of an account stored in an account database; determining that the password from the tuple matches a password for the account; in response to the determining indicating a match, setting a security flag for the account identifying the account as compromised; subsequent to the security flag being set, receiving a login request with validated credentials for the account from a computing device; and in response to the login request, transmitting a request to the computing device to modify the password for the account.