Explore the concerning intersection of mental health websites and data tracking in this 50-minute Black Hat conference talk. Discover the types and frequency of third-party trackers present on mental health-related sites, and understand the extent of data sharing occurring during depression tests. Follow the speakers as they reveal the journey of user data, from real-time bidding pre-bid requests to the transmission of test answers. Gain insights into the implications for privacy, advertising, data security, and user trust. Learn about technologies like Hotjar and programmatic advertising, and understand their roles in this ecosystem. Consider the ethical implications and potential solutions, including the impact of GDPR. Reflect on why mental health data requires special consideration and protection in the digital age.