I’ve been a member and seller on eBay with the same user ID since 1998, and regularly turn to the site when I want to buy or sell just about anything you can mail. But recently there have been attacks by criminal gangs on user accounts which eBay seems to be unable or unwilling to inhibit. These gangs take over an innocent user’s account, possibly by tricking them out of their username and password (or possibly through an internal eBay vuln, which I think is more likely), and then use that account to sell non-existent items (and collect the money) and to seek and find more victims.
Many of the compromised accounts have 100% positive feedback, and had prior sold hundreds of items. One victim who had his account hijacked says he was locked out of his account, and then later billed “around $50” by eBay for seller’s fees on items he had never heard of. When customers click on a scammer’s listing, they are redirected to a professional, official-looking page which asks them to log in and ‘confirm’ their credit card and bank account details! The items ostensibly for sale in these compromised listings range from smartphones and TVs to laptops and bicycles.