Scammers are getting smarter. They find new means of attacking digital banks and online payment apps, every single day. And they’re not only going after big companies anymore. They prey on anyone with a hole in their security — large or small.
Neobanks and digital wallets are particularly in the crosshairs. They hold real money. They store personal data. And they operate mostly online — unlike brick-and-mortar banks. It means they’re faster and more convenient — but it also leaves them more exposed.
The good news? There’s a tested way to push back.
Security audits.
A decent security audit uncovers the cracks before scammers do. It checks every part of your platform and asks the uncomfortable question: Is this safe enough?
Here’s the thing, though — not all audits are the same. Different audits check different things. If you’re running only one type, you are leaving doors open.
This post explores 6 critical neobank and digital wallet security checks every fintech should undergo. Whether you’re operating a growing neobank or building the next big payment app, these audits are your first line of defense against fraud, theft and data breaches.
Let’s break them all down.
The Fraudsters’ Game — How Scammers Are Adapting to Target Digital Banking
Before wading into these audits, it helps to know what you’re facing.
Con artists use a variety of tricks to crack into neobanks and digital wallets. Some are high-tech. Some are surprisingly simple.
These are the most prevalent modes of attack at this time:
| Attack Type | What It Does | How Common |
|---|---|---|
| Phishing | Tricks users into revealing login details | Very High |
| Account Takeover (ATO) | Uses stolen credentials to take over accounts | High |
| SIM Swapping | Hijacks a user’s mobile phone number to bypass 2FA | Rapidly Increasing |
| API Exploitation | Attacks vulnerabilities in the app’s backend | High |
| Synthetic Identity Fraud | Creates artificial identities to open fake accounts | Continuously Rising |
| Man-in-the-Middle Attacks | Sits between user and server traffic | Moderate |
| Insider Threats | Internal employees abusing internal access | Not Well Reported |
All of these attacks can be mitigated — or at least made significantly more difficult — with the right sorts of security audits.
According to Feedzai’s Financial Crime Report, digital banking fraud attempts are up over 200% in the past few years. That number alone should be enough to get us to take audits seriously.
What Exactly Is a Security Audit in the Neobank World?
A security audit is a deep review of your platform’s protections. It looks at your code, your network, your user processes and what your team is doing. Simple goal — find a weakness before an imposter does.
Consider it as a kind of fire drill. You don’t wait until there’s an actual fire to figure out whether a plan of escape will work. You test it early. You fix the problems. And you run it again and again.
Security audits are no different.
For neobanks and digital wallet platforms, these are not optional audits. Regulators around the world are pushing fintechs to prove they take security seriously — from the FCA in the UK to America’s CFPB.
Keeping regular audits isn’t just for protection. It is also a matter of staying compliant and maintaining the trust of your users.
Audit #1 — Penetration Testing: Thinking Like a Hacker
What It Is
Penetration testing — or “pen testing” for short — is when a group of ethical hackers intentionally attempts to gain unauthorized access to your system. They employ the same tools and tricks that real scammers use. But rather than steal anything, they issue a report informing you exactly what they’ve discovered.
It is a managed attack intended to bring out real weaknesses.
Why Neobanks Need It
Neobanks have complex systems. There’s the app, the web platform, the backend servers, the APIs, the databases — and more. Every single one of these is a potential way in.
A pen test tests them all. It will try to come in the front door, the back door and every window in between.
What Pen Testers Look For
- Weak login systems which can be easily brute-forced
- APIs that share too much data
- Session tokens that do not expire correctly
- Insecure mobile data storage
- Misconfigured cloud settings
- Vulnerabilities in third-party integrations
How Often to Run It
At minimum, once a year. But for active neobanks processing high transaction volumes, pen testing every quarter is the better play. Also run one when you release a new feature or make significant code changes.
What You Get
A comprehensive report that lists all vulnerabilities by severity — critical, high, medium and low. Your dev team then goes down that list and starts fixing each problem in order of how dangerous it is.
Audit #2 — API Security Audit: Shutting the Backdoor Scammers Love to Exploit
Why APIs Are a Scammer’s Best Friend
Every neobank and digital wallet operates on APIs. APIs are the plumbing that hooks your app into payment processors, KYC providers, credit bureaus, and more.
They are also one of the most abused vulnerabilities in fintech security.
If an API is insecurely designed, scammers can employ it to extract user information, enable unauthorized transactions or defeat the access control method altogether. And because APIs exist behind the scenes, these attacks frequently go unnoticed for a long time.
What an API Security Audit Checks
An API security audit looks at all of your platform’s APIs — internal and external. It checks:
| Check | What It Looks For |
|---|---|
| Authentication | Are API keys and tokens adequately secured? |
| Authorization | Can users only access their own data? |
| Rate Limiting | Is there protection against brute-force attacks? |
| Input Validation | Are the APIs in a position to reject malicious inputs? |
| Data Exposure | Are APIs leaking more data than they need to? |
| Encryption | Is all data transferred over APIs encrypted? |
The OWASP API Security Top 10
The Open Web Application Security Project (OWASP) has released a list of the top 10 API security threats. A proper API audit evaluates your platform against every item on this list. If you haven’t heard of it, it is the gold standard framework for API security reviews.
Real-World Impact
In 2021, a major fintech company was breached because one of its APIs provided full account details — including account numbers — in response to a request that only sought basic profile info. It’s exactly that kind of over-exposure which an API audit flags up.
Audit #3 — KYC & Identity Verification Audit: Keeping Fake Accounts Out
The Synthetic Identity Problem
One of the fastest-rising types of scams plaguing neobanks at the moment is synthetic identity fraud. A scammer builds a fake identity using a mix of real and made-up information — a real Social Security number in one place, a made-up name and address in another.
These fake identities fare well on the surface. They open accounts. They build a transaction history. And then, at an opportune time, they cash out and vanish.
This is why you should never skip a KYC (Know Your Customer) and identity verification audit.
What This Audit Reviews
A KYC audit does more than just decide if you have an identity verification process. It tests whether that process really functions. Specifically, it looks at:
- Onboarding flows — Is ID verification strong enough at sign-up?
- Document checks — Are forged or faked documents slipping past?
- Liveness detection — Can biometric verification catch deepfakes?
- Continuous checks — Do you re-verify accounts when behaviour changes?
- Adverse media screening — Are high-risk individuals flagged at the point of enrollment?
KYC Audit Red Flags
| Red Flag | What It Signals |
|---|---|
| High account creation from a single device | Possible bot-driven fraud |
| Multiple accounts with identical attributes | Synthetic identity attempt |
| Liveness check failed but passed manually | Gap in the verification process |
| No re-verification after suspicious activity | Persistent risk unmitigated |
| Weak document validation tools | Vulnerable to fake IDs |
Compliance Angle
KYC audits also enable neobanks to remain AML (Anti-Money Laundering) compliant. Regulators also expect fintech platforms to have airtight identity checks. An audit proves you do.
Audit #4 — Cloud Security Audit: Protecting the Engine Room
Neobanks Live in the Cloud — That’s Both an Opportunity and a Risk
Virtually every neobank and digital wallet operates on cloud infrastructure — AWS, Google Cloud or Microsoft Azure. The cloud makes things faster, more scalable and cheaper.
But if it’s not configured properly, it’s also a huge vulnerability.
Improper cloud configurations are a leading cause of breaches in fintech. Just one misconfigured setting could expose millions of user records to the public internet — with no hacking required.
What a Cloud Security Audit Covers
A cloud security audit involves a comprehensive examination of how you’ve set up and manage your cloud environment. It checks:
Access Controls — Who is authorized to access what? Are there any accounts that have greater access than the minimum required?
Storage Configuration — Do you have any databases or storage buckets that are accidentally open to the world?
Encryption — Is data encrypted in transit and at rest?
Logging and Monitoring — Are anomalous activities being logged and flagged?
Backup and Recovery — If everything falls apart, how fast can you recover?
Third-Party Integrations — Do external services connected to your cloud have appropriate access levels?
The Shared Responsibility Model
One mistake that many neobanks make is believing their cloud service provider handles all security. They don’t. AWS, Azure and Google Cloud secure the infrastructure — it’s your responsibility to secure everything you’re building on top.
A cloud security audit ensures your end of that responsibility is met.
Top Cloud Misconfigurations to Watch For
- S3 buckets that are publicly accessible
- Overly permissive IAM roles
- Disabled multi-factor authentication on admin accounts
- Unencrypted database snapshots
- No notifications configured for abnormal login activity
Audit #5 — Transaction Monitoring Audit: Catching Fraud in Real Time
Money Moves Fast — Fraud Moves Even Faster
Scammers don’t wait around. When they get access to an account or find a way to game a system, they move money quickly. Sometimes within minutes.
A transaction monitoring audit tests if your platform can keep up. It evaluates the protocols and rules you use to identify and prevent suspicious transactions before money leaves your platform.
What Gets Reviewed
This is a full audit of your transaction monitoring setup:
| Area Reviewed | What the Audit Checks |
|---|---|
| Rule Engine | Are the rules used to detect fraud up-to-date and effective? |
| Thresholds | Are transaction limits held at the appropriate levels? |
| Alert Response Time | How quickly does your team react to a flag? |
| False Positive Rate | Are too many legitimate transactions being blocked? |
| Cross-Channel Monitoring | Is fraud being tracked across the app, web and card? |
| ML Model Performance | Is the AI behind your fraud detection still accurate? |
The False Positive Problem
One of the great problems in transaction monitoring is false positives — real transactions falsely identified as fraud. This irritates actual customers and erodes trust.
A proper transaction monitoring audit finds the balance. It allows you to stop more actual fraud while letting genuine transactions pass through smoothly.
Velocity Checks and Pattern Rules
Your velocity rules are also examined in transaction monitoring audits. These are limits on how fast someone can execute multiple transactions. For instance, three transactions over $500 in less than 10 minutes should prompt a review. Auditors test whether your velocity rules are tight enough to catch fraud — but not so tight that they block normal user behaviour.
Audit #6 — Employee Access & Insider Threat Audit: The Risk You Might Be Ignoring
The Threat From Within
Not all scammers are on the outside. Now and then, the risk comes from within the organization itself.
Insider threats are one of the most under-publicized issues in fintech security. A staff member with too much access can view customer data they shouldn’t see, leak sensitive information or even facilitate fraud.
It doesn’t always involve a malicious employee. It may be an accidental data exposure sometimes. Often it is a former employee whose access was never removed. In either case, it’s a serious problem.
What an Insider Threat Audit Covers
This audit focuses on how your team accesses your systems and data:
Access Rights Review — Does every member of staff have access to only what they need for their role? This is what we call the principle of least privilege.
Offboarding Procedures — When an employee departs, are their accounts and credentials immediately deactivated?
Activity Logging — Is what employees are doing inside sensitive systems being logged and monitored?
Privileged Account Management — Are admin-level accounts tightly controlled and regularly reviewed?
Training Records — Are employees up-to-date on their security awareness training?
A Real-World Scenario Worth Thinking About
Imagine a customer service rep who can see all account details — including transaction histories and card numbers — to handle complaints. That’s a lot of access. An insider threat audit asks: does that agent actually need all this? Can the view be restricted to only what is necessary to fix the problem?
Minimal adjustments to access control can drastically lower insider risk.
The Numbers Don’t Lie
| Insider Threat Type | % of Incidents |
|---|---|
| Negligent employee (accidental) | 56% |
| Malicious insider (intentional) | 26% |
| Credential theft (compromised accounts) | 18% |
Source: Ponemon Institute Cost of Insider Threats Report
Most insider threats aren’t malicious — they’re negligent. Most can be solved with good training and tight access controls.
Building Your Security Audit Calendar
Running one audit is a start. That’s what serious platforms do — keep all six running on a regular schedule.
Here is a realistic audit timeline for neobanks and digital wallet companies:
| Type of Audit | Recommended Frequency |
|---|---|
| Penetration Testing | Quarterly or after major updates |
| API Security Audit | Every 6 months or after significant API changes |
| KYC & Identity Verification Audit | Annually + after regulatory changes |
| Cloud Security Audit | Quarterly |
| Transaction Monitoring Audit | Monthly review, full audit every six months |
| Insider Threat Audit | Annually + after team changes |
Follow this calendar and you build a rolling program of security reviews that leaves very little room for scammers to get a foothold.
Why Skipping These Audits Is a Bad Idea
The cost of bypassing security audits is real and significant. Here’s a closer look at what’s on the line:
Financial Loss — Fraud and breaches are expensive. Recovery costs even more.
Regulatory Fines — Companies that can’t demonstrate their security is up to standard get fined by regulators.
User Churn — Users tend to leave after losing trust, and when they do, they seldom return.
Reputational Damage — One public breach may cast years of brand building into turmoil.
Legal Liability — Data breach victims are able to take legal action. And they do.
All of these outcomes are unacceptable for up-and-coming neobanks and digital wallet platforms. Regular audits are an investment, but a tiny one compared to the cost of a breach. For those interested in how leading digital banking platforms approach security and compliance, BankProfi provides valuable insight into neobanking best practices and broader fintech trends.
FAQs — Neobank Security Audits, Explained
How much does a neobank security audit cost?
It is really a question of the kind and scale. A penetration test can cost anywhere between $5,000 to $50,000 based on how complex your platform is. API and cloud audits vary in much the same way. Some tools and frameworks have free starting points, but full audits done by professional security firms carry bigger price tags — and are worth every penny.
Could a small fintech startup afford these audits?
Yes. Some security companies will scale their pricing to meet the needs of a startup. There are also open-source tools and frameworks — such as OWASP — to help smaller teams run internal audits at low cost. It is a good plan to begin with the most risky areas (pen testing and API security) when budget is limited.
What is the difference between a security audit and a compliance audit?
A security audit verifies that your platform is actually secure. A compliance audit determines whether you meet specific regulatory requirements. Ideally, you run both. A secure platform tends to be compliant — but a compliant platform isn’t always secure. Both matter.
How long does it take to do a complete security audit?
It varies. A penetration test could last one or two weeks. A cloud security review could take just a couple of days. A comprehensive KYC audit requiring process review and tool assessments can take several weeks. Planning for two to four weeks per major audit is a reasonable estimate.
Does a security audit guarantee we won’t get hacked?
No audit guarantees zero risk. What audits do is reduce that risk significantly by discovering and remediating known vulnerabilities. Think of it like wearing a seatbelt — it doesn’t prevent an accident, but it makes surviving one much more probable.
Should these audits be conducted by internal teams or external firms?
Both have value. No one knows your platform like your internal teams. Outside firms offer fresh eyes and specialized expertise. The most credible results — particularly for regulatory purposes — come from external audits. The best approach is a mix of internal reviews and annual external audits.
Are there specific regulations requiring neobanks to conduct security audits?
Yes. Depending on your region, regulations like PCI-DSS, GDPR, the UK’s FCA guidelines and the EU’s DORA (Digital Operational Resilience Act) either require or strongly encourage ongoing security testing and auditing. Non-compliance can lead to hefty fines and licensing problems.
Wrapping It Up — Six Audits Stand Between You and the Scammers
Scammers are not going away. If anything, they’re only getting better at what they do. They’re using AI. They’re running sophisticated schemes. And they are especially targeting fintech platforms that skimp on security.
The six audits covered here — penetration testing, API security, KYC and identity verification, cloud security, transaction monitoring and insider threat reviews — are how you address that threat.
Each has a unique angle. Combined, they create a full security picture that leaves very little room for fraud to thrive.
Conducting these audits isn’t simply a regulatory box-check. It’s about protecting real people — your users — who trust you with their funds day in and day out.
That trust is difficult to build and easy to destroy.
Don’t wait for a breach to get serious about security.
Run the audits. Fix the gaps. Repeat.
Nothing less is acceptable for your platform — and your users.
