Covid-19 caused a spike in psychological disorders. Mental health counseling platforms exploded in popularity. One of them, Cerebral, accumulated lots of very personal data about depression, suicide, and relationship issues. And then inadvertently shared it with TikTok. https://techcrunch.com/2023/03/10/cerebral-shared-millions-patient-data-advertisers/ (Oh, but don't worry: it shared the data with Facebook and Google too, I suppose to preserve "digital sovereignty"...)