For a consumer in Lagos making an online payment or a business accepting digital payments in Abuja, a transaction may take only seconds. Behind the scenes, however, a complex network of technology works in real time to verify that the payment is legitimate.
As Nigeria’s digital payments ecosystem expands, security measures are also evolving. Mastercard’s 2026 SME Confidence Index found that 100 per cent of surveyed Nigerian SMEs consider digital payments vital, with 42 per cent accepting online payments and 57 per cent operating across multiple channels.
The Central Bank of Nigeria’s March 2026 requirements for real-time fraud monitoring and enhanced identity verification further highlight the growing emphasis on payment security.
Unlike traditional point-of-sale transactions, online payments often take place without a physical card or face-to-face interaction. Financial institutions must instead assess multiple signals, including the device, payment credentials, merchant, customer behaviour and transaction details.
Mastercard data indicates that 70 per cent of card-related fraud occurs through card-not-present transactions, where the physical card is not presented during the purchase.
Nigeria’s experience also highlights the importance of stronger security. The Nigeria Inter-Bank Settlement System (NIBSS) reported that digital-payment fraud losses fell by 51 per cent to ₦25.85 billion in 2025, from ₦52.26 billion in 2024.
From Static Credentials to AI
A valid card number does not necessarily mean a transaction is legitimate. This is where artificial intelligence and advanced analytics are increasingly being used to identify suspicious activity.
Mastercard’s Decision Intelligence uses AI and network data to assess transactions and generate risk scores, helping financial institutions identify potentially fraudulent payments while reducing unnecessary declines of legitimate transactions.
The approach shifts payment security from simply checking whether a transaction meets predefined rules to assessing whether it makes sense based on its wider context.
Mastercard is also developing generative AI capabilities using transaction data that has been stripped of personal information. These systems can identify patterns involving factors such as merchant location, fraud activity, authorisation and chargebacks.
Security Behind the Scenes
Consumers want fast and convenient payments, while businesses need legitimate transactions to go through without unnecessary delays. At the same time, financial institutions must maintain strong fraud controls.
One technology helping to achieve this balance is tokenisation. Rather than exposing the underlying card number during a digital transaction, Mastercard tokenisation replaces sensitive payment details with a unique token.
Mastercard says more than four billion of its transactions are tokenised globally each month and has set a target of achieving 100 per cent tokenisation of its online transactions by 2030.
For consumers, this security may simply appear as a smooth checkout experience. Behind that experience, tokenisation, authentication and risk intelligence work together to protect transactions.
Payment security also extends beyond the transaction itself. Fraudulent merchants can use convincing websites and digital storefronts to deceive consumers into making payments.
Mastercard’s Merchant Trust Services uses network insights, cybersecurity and identity capabilities, external intelligence and real-time analytics to help payment providers identify potentially fraudulent merchants during onboarding and through continued monitoring.
The broader approach reflects the growing need for cooperation among banks, fintechs, merchants, technology companies and regulators.
Mastercard says it has invested more than $12.6 billion in cybersecurity innovation since 2018 and has supported the launch of more than 20 cybersecurity-focused startups.
In Nigeria, the company also collaborates with the Committee of E-Banking Industry Heads (CeBIH) to bring financial institutions, payment service banks and fintechs together to discuss emerging threats, intelligence sharing and fraud prevention.
Its Africa Cybersecurity Center of Excellence, initially launched in Nigeria and South Africa, focuses on threat intelligence, industry collaboration, risk monitoring and preparedness.
For Nigeria, the challenge is no longer simply expanding digital payments but ensuring that the infrastructure supporting them remains secure as adoption grows.
The payment of the future may be almost invisible to the customer, but the intelligence operating behind it will be crucial to making that convenience safe.