Defence TinKode a.k.a Razvan Cernaianu claimed to have found a fraudulent way to double the money in his PayPal account. The expert at Cyber Smartclaimed to have a loophole in the PayPal service, for the precision in its Chargeback Process, which could be exploited by a bad actor to increase his balance in his account. After a month, when he checked is Paypal balance he noticed that it was negative. He transferred all his money from his temporary account to his another real PayPal account after a month.”]
Source: https://securityaffairs.co/wordpress/25723/hacking/fraud-scheme-paypal.html