Chinese companies must prepare for a potential spike in phishing and impersonation attacks, following reports that the personal data of one billion residents of the country has been put up for sale online. If legitimate, this data leak could lead to sim swapping attacks or other impersonation activities. Hackers claiming to have access to databases containing this information have put it up for sale on an online forum specializing in the trade in stolen databases. The price was 10 bitcoins ($197,376) for 24TB of data. The data included date and place of birth, national identification number, home address and mobile…