Nedbank says 1.7 million customers impacted by breach at third-party provider. Hacker(s) believed to have exploited a vulnerability to breach Nedbank’s marketing contractor. Nedbank, one of the biggest banks in the South Africa region, has disclosed a security incident yesterday that impacted the personal details of 1.7 million users. The bank says the breach occurred at Computer Facilities (Pty) Ltd, a South African company the bank was using to send out marketing and promotional campaigns. Third-party company: Computer Facilities (Pty) Ltd.