Why digital banks fail security audits

Digital banks move fast. You build features quickly. You integrate with many third-party services. You connect to NIBSS. You connect to card processors. You connect to core banking engines. Every single connection creates a new weak point.

Automated scanners only check for missing patches. They do not understand the rules of a bank transfer. They do not know what an account limit means. They do not know how an admin dashboard operates.

We act like real cybercriminals. We attack the business logic of your digital bank. We manipulate the data that moves between your mobile app and your backend servers. We find the hidden vulnerabilities that cause massive financial losses.

The anatomy of a digital banking attack

Hackers do not break your encryption. They break your logic. Let us look at a standard transfer attack.

A user logs into your banking app. They have 10,000 Naira in their account. They want to transfer 10,000 Naira to a friend. The app sends a request to the server: `amount=10000&destination_account=1234567890`.

The hacker intercepts this request using a tool like Burp Suite. They modify the request. They send the exact same request fifty times in the exact same millisecond.

Your server receives fifty requests at once. The server checks the balance for the first request. The balance is 10,000 Naira. The server approves it. At the exact same time, the server checks the balance for the second request. The database has not updated yet. The balance is still 10,000 Naira. The server approves it again.

The server processes all fifty requests. The hacker sends 500,000 Naira to their friend, but their starting balance was only 10,000 Naira. This is a classic race condition. Scanners never find this. We test your database locking rules to ensure this never happens to you.

What we test in a digital banking review

We test the entire attack surface. We test the iOS app. We test the Android app. We test the backend API. We test the admin portal. We test the third-party webhooks. We cover every single path a hacker takes.

Authentication and session management

We attack your login screens. We try to guess user passwords. We try to bypass your multi-factor authentication (MFA). If you use SMS OTPs, we test if an attacker can brute-force the 6-digit code. We test your session tokens. We check if a logged-out user can still use an old token to access their account. We force you to implement strict, secure authentication.

Broken Object Level Authorization (BOLA)

BOLA is the biggest threat to digital banks. We test every single API endpoint that uses an account ID or transaction ID. We log in as User A. We change the URL parameter to User B's ID. If your server gives us User B's bank statement, you have a critical BOLA flaw. We hunt down every single BOLA vulnerability in your entire system.

Transaction logic and manipulation

We manipulate your transfer logic. We change the transfer amount to a negative number. If your server processes a negative transfer, it adds money to the sender's account. We change the currency type. We test the conversion rates. We ensure your backend never trusts the data sent by the frontend mobile app.

Core banking integration gaps

Your frontend app talks to a middleware layer. The middleware talks to your core banking system. We test these connection points. We find situations where the middleware says a transaction failed, but the core banking system says it succeeded. This causes reconciliation nightmares. We find the gaps so you can fix them.

Admin portal vulnerabilities

The back office is the ultimate target. A hacker with admin access can create fake accounts, modify balances, and wipe transaction logs. We attack your internal tools aggressively. We try to steal admin cookies using Cross-Site Scripting (XSS). We try to bypass the internal VPN blocks. We lock down your most sensitive dashboard.

The tools we use to break your bank

We use advanced offensive security tools. We write custom scripts to exploit your specific banking rules.

Real world finding

BOLA exposed full transaction histories of all users

A neobank asked us to test their new mobile application. We found a critical BOLA vulnerability in the receipt generation endpoint. A user clicked a button to generate a PDF receipt for a specific transaction. The app sent a request to the server with the transaction ID. We intercepted the request. We changed the transaction ID. The server generated a PDF receipt for a stranger's transaction. The receipt contained the stranger's name, account number, and balance. We wrote a script that downloaded 10,000 receipts in ten minutes. The bank fixed the authorization logic the same day.

The final delivery and remediation process

We do not hand you a report and vanish. We give your engineering team the exact tools they need to secure the bank quickly and permanently.

You receive a massive, detailed technical report. We rank every vulnerability by risk level using the CVSS framework. We provide the exact HTTP request logs. We write out the exact steps to reproduce the attack. Your engineers can copy our steps and watch the bug happen on their own screens.

We give you precise code snippets to fix the flaws. We show you how to implement strict server-side validation for all transfers. We show you how to secure your authentication endpoints. We show you how to enforce robust database row locking to prevent race conditions.

We jump on a video call with your developers. We explain the risks plainly. We answer every single question. After you deploy the fixes, we retest the application to prove the bugs are gone. We issue a clean security certificate.

Regulatory compliance and CBN audits

Digital banks face the strictest regulatory audits in Nigeria. The Central Bank of Nigeria (CBN) demands absolute proof that your infrastructure is secure. If you fail an audit, your banking license is suspended.

We map every single vulnerability we find to the major compliance laws. We map our tests to the strict CBN cybersecurity guidelines. We map our tests to the NDPA privacy rules. We map our tests to the PCI DSS standard for card processing. We map our tests to the OWASP Top 10 standard.

Our Head of Compliance Oversight reviews your final report. We ensure the document completely satisfies your banking partners, your investors, and your regulators. You prove that you protect customer deposits. You pass your audits. You grow your neobank without fear.

Secure your digital bank today. Stop hackers from stealing customer deposits.

Book a Security Review

Frequently asked questions

Do you test core banking integrations?

Yes. We test how your frontend app talks to your core banking system. We test your middleware. We find the integration gaps where transaction logic fails and money goes missing.

How do you test authentication in banking apps?

We attack your login flow. We test your multi-factor authentication (MFA). We try to bypass OTPs. We try to spoof biometric checks. We ensure attackers cannot access customer accounts.

Do you test for race conditions in transfers?

Yes. We send fifty concurrent transfer requests. We check if your database handles the locks correctly. We ensure a user with 5,000 Naira cannot send 50,000 Naira by tricking the server timing.

Do you test the backend administrative dashboards?

Yes. The admin dashboard is the highest risk. A compromised admin account leads to a massive breach. We aggressively test your internal tools for broken access controls and weak passwords.

Does your report satisfy CBN requirements for neobanks?

Yes. The CBN requires strict security audits for digital banks. We map all findings to CBN guidelines. We give you a compliance-ready report that proves your infrastructure is safe.