A tool for credential validation using multiple computing devices. The tool select at least one challenge question. The tool selects two or more user owned devices, wherein selecting the two or more user owned devices includes querying a database for each user owned device associated with a user account. The tool presents the at least one challenge question to the two or more user owned devices. The tool determines whether the at least one response received from the two or more user owned devices is a correct response relative to the at least one challenge question.