THN disclosed details of a critical flaw discovered by the Egyptian researcher Yasser H. Ali four months ago, which could be used to hack any eBay account. In May, eBay suffered a major data breach and in the same period security experts discovered three other critical flaws which impacted eBay users. eBay admitted that the cyber attack has impacted nearly 145 million registered users worldwide due to the violation of company database, in response eBay immediately requested its customers to change their passwords. A potential attacker have to know only the login email ID or username of the victim to compromise its account.”]
Source: http://securityaffairs.co/wordpress/28551/hacking/poc-hacking-ebay-account.html