Nigeria, Oct. 19 -- Digital bank OPay has unveiled seven in-app security features in the latest drive to firm up its operational safety mechanism to deliver improved protection of customers' funds.

The fintech unicorn, now valued at $2.8 billion, is rolling out the products to provide extra layers of security to customers when one-level protection can hardly guarantee bank account safety in the face of increased exposure to cyberattacks and phone theft.

"For our customers, for every account they have, the top priority they have is security," Elizabeth Wang, OPay Nigeria's chief commercial officer, said at the launch in Lagos on Friday.

"That's why from the OPay side, we invest a lot and we will continue to do so on the security product...