Investigators retrieved the relevant data of stolen credit card transactions from the e-commerce platform where the funds involved flowed and the third-party payment institution involved in the POS machine. Taking keywords as the main clue, they connected the same type of cases in the city in series and found more than 300 suspected stolen credit cards, involving more than 3 million yuan.
After investigation, from March 2065438 to April 2007, criminal gangs headed by Xu and Duan illegally purchased a large amount of citizen information through Zhang and others, and wrote hacking software through professional programmers such as Xu. Since then, criminal gangs have used the above illegally obtained citizen information and code scanning hacking software to attack the database of mobile payment platforms and illegally obtain information such as platform user accounts, login passwords and even payment passwords.
Xu Qin said that unlike some conventional bank card cases, in this case, there is no criminal gang directly contacting the victim's credit card, but the criminal gang leaked the bank card bound to the victim's payment platform account by attacking the third-party payment platform, "which is equivalent to the criminal gang controlling your credit card and spending it at will".
Xu Qin specifically mentioned that many victims in this case had the same password in their common online accounts, which gave criminals an opportunity. "For example, your Weibo, WeChat and payment platform accounts are the same. Once a platform is broken, criminal gangs may' crash the library' through the account password, thus breaking your online payment account."
According to the police, in this case, several common payment platforms have "crashed into the library".