A device generates parameters identifying selectively revealed un-obfuscated information associated with administering and assessing a Turing test. The device provides, to a client device, a challenge based on the parameters. The challenge directs the client device to selectively reveal the un-obfuscated information for presentation to a user associated with the client device. The device receives a response, to the challenge, from the client device and determines, based on the response and the parameters, whether the user associated with the client device is human. The device selectively performs an action based on determining whether the user associated with the client device is human.