The Pi Network application, which allows you to mine digital currency on a mobile device, may be involved in the leakage of personal data of Vietnamese users. The database with 17 GB of data is sold on one of the hacker forums. Presumably, it contains information obtained as a result of Pi Network users passing the KYC procedure, including identity cards, addresses, phone numbers and emails. https://e.vnexpress.net/news/news/personal-data-leak-affects-thousands-of-vietnamese-4279503.html