Captcha Virus Captcha domain tries to trick you into subscribing to its browser notifications so that it can send notification spam to your desktop or phone. What is Captcha? Captcha displays fake error messages to trick you into subscribing to its notifications. These are a few of the fake error messages that the site will show to trick you into clicking the “Allow” button: To access to the video, click "Allow" Click "ALLOW" to play the video Stream and download available Can't play this video! Browser may block video autoplay... Click "Allow" to play the video Press "Allow", to watch the video To access, click allow! ...