Postbank, the banking division of South Africa's Post Office, has lost more than $3.2 million from fraudulent transactions and will now have to replace more than 12 million cards for its customers after employees printed and then stole its master key.
The Sunday Times of South Africa, the local news outlet that broke the story, said the incident took place in December 2018 when someone printed the bank's master key on a piece of paper at its old data center in the city of Pretoria.
The bank suspects that employees are behind the breach, the news publication said, citing an internal security audit they obtained from a source in the bank. read more.