A week ago we published the appalling story of an eBay seller who had his account hacked and the email address changed on his best selling listings. Due to his high turnover and the low value of each individual order, 10s of thousands were syphoned from payments from the hacked eBay account before he noticed.
https://tamebay.com/2019/08/changed-paypal-email-address-on-hacked-ebay-account-a-multi-million-fraud.html