Yandex IT company has launched the Yandex SmartCaptcha user verification service for Russian companies. The service can be customized on the site of any company. SmartCaptcha will allow companies to protect their sites from robots, fictitious registrations, spam and DDoS attacks. The service is currently being tested by 30 clients of the Yandex Cloud platform, and SmartCaptcha is available to external customers upon request.