<p>After a shocking data breach at the Finnish psychotherapy service Vastaamo, a nation’s secrets are being held to ransom by a faceless hacker. Jenny Kleeman traces the story.</p><p>After negotiations with Vastaamo fail, ransom_man begins publishing 100 patient records a day on the dark web. He posts a link to the records on popular sites like Reddit and Ylilauta, Finland’s version of 4chan.</p><p>He ends the post with one word. “Enjoy!” .</p><p>Finland is a nation in panic.</p><p>One victim, Meri-Tuuli, heads to the dark web to find out if her notes are among those published, and is appalled by what she sees.</p><p>But after a few days, the hacker does something that no one could have foreseen.</p><p>Written and presented by Jenny Kleeman. Producer: Sam Peach. Executive Producer: Georgia Catt. Sound Design: Sam Peach Original music composed, performed and produced by Echo Collective. A BBC Studios Production Commissioning Executive is Tracy Williams Commissioner: Dan Clarke</p>