5 Most Common Fraud Attacks on Neobanks Offering Stablecoin Cards

There is a surge in demand for neobanks offering stablecoin cards. They combine traditional card payments (allowing you to swipe anywhere) and crypto rails (instant, global, and low-cost).

While it might seem so direct, things may quickly get complicated as it involves dealing with traditional banking risks and crypto-native threats. And with both together, fraud rises exponentially as well.

As neobanks involve more people, even minor issues can turn into serious financial losses. Hence, understanding these patterns is important to separate safer systems from riskier ones that may break under pressure.

Why is Fraud Rising in Stablecoin Card Neobanks?

Neobanks involve a lot of processes and systems that increase the risk of fraud at multiple steps. They combine:

Card networks (Visa/Mastercard)
Crypto wallets
Stablecoin liquidity
APIs and smart contracts

All of them make things complex, creating more surface area for attacks. And when it comes to a large-scale user base, fraud multiplies.

Neobanks · stablecoin cards · fraud

5 ways fraud
hits stablecoin cards.

Card networks + crypto rails together mean two attack surfaces at once - and irreversible settlement on the crypto side.

Card testing (BIN attacks)

Stolen card data probed with rapid ~$1 charges until a live card is found, then hit for size.

Why it stingsStablecoin-backed funds drain fast with thin delay buffers.

Account takeover

Phishing, fake logins, SIM swaps or reused passwords hand over the whole wallet.

Why it stingsDigital onboarding & OTP auth give easy entry at scale.

Friendly fraud

A “customer” buys, receives the goods, then disputes the charge as fraud.

Why it stingsCrypto already settled - the chargeback loss can't be reversed.

Fake merchants & laundering

Bogus or hijacked merchant profiles push fake transactions, then off-ramp as “clean revenue.”

Why it stingsCrypto rails make the cash-out fast and hard to trace.

Wallet & contract exploits

Malicious signing, weak permissions or leaked API keys enable bulk draining.

Why it stingsOne exploit can hit many users at once - not just one card.

Two attack surfaces, one defense layer. Real-time monitoring, wallet-level controls and unified visibility are what let neobanks scale safely.

1. Card Testing Attacks (BIN Attacks)

This is the very first attack that comes to notice. In this, the fraudsters use stolen data from the web to test with small transactions of ~$1. And they do these transactions at a very high frequency.

Once they get details of a working card, they use it for larger transactions.

These types of attacks are risky as:

Since cards are stablecoin-backed, the fraudsters get direct access to the funds.
The delay buffers are fewer, and thus the balance could be drained quickly.

2. Account Takeover (ATO)

Instead of attacking the card, attackers target the user account itself. It can be done by:

Phishing emails
Fake login pages
SIM swap attacks
Password reuse

Once the fraudsters get access to the user's wallet, they change credentials, link new wallets, and drain the balance.

Neobanks are at risk with these, as entry points are easier to find for fraudsters with:

Digital onboarding
OTP-based auth
No physical verification

At a large scale, even a small percentage of users getting compromised results in huge losses.

3. Friendly Fraud (Chargeback Abuse)

In this type of attack, fraudsters act as normal customers. Here's how they move with it:

Fraudsters (acting as users) make a purchase
Receives the product/service
Raises a dispute claiming fraud

Now the neobank faces chargeback losses, and the crypto funds have already been settled since stablecoin transfers mean instant settlements, unlike traditional ones that take a longer time. Also, card transactions in fiat could still be reversed, but stablecoin card payments - No!

4. Fake Merchants & Payment Laundering

This type of fraud is more organized. Attackers create fake merchant profiles or take over existing ones and start running fake transactions. Now, as the money moves via crypto rails, they get to off-ramp and withdraw to the bank as 'clean revenue.'

5. Wallet & Smart Contract Exploits

This is where crypto-native risks come in. If your system involves custodial wallets, smart contracts, and API-based fund movement, they are prone to risks.

They can be attacked by:

Unauthorized access
Bulk draining
System-wide exploits

For this, the fraudsters commonly use these paths:

Malicious transaction signing
Poor permission management
Leaked API keys

Unlike card fraud, this can impact multiple users at once.

Issues with Large-Scale Fraud Detection

Fraud detection becomes tougher as the business grows.

Since there are multiple systems involved - cards, wallets, blockchains, and APIs - they all need extensive monitoring.

It is important to make real-time decisions for the neobanks to be safe. They cannot wait for 2-3 days like traditional card banking to act. Real-time transactions instantly mean real-time decision making, instantly!

Manual tracking doesn't scale. Spreadsheets, logs, and dashboards break quickly at high volume.

Neobanks need to scale safely:

✓ Real-time monitoring
✓ Wallet-level controls
✓ Smart contract audits
✓ Unified visibility

How Stablecoin Infrastructure Needs to Evolve?

Stablecoins solve money movement, but fraud prevention needs additional layers.

Neobanks need:

Real-time transaction monitoring
Velocity and behavior checks
Wallet-level risk controls
Smart contract audits
Unified visibility across systems

This is where infrastructure becomes critical.

Where Endl Fits In?

Endl cards help bring control and visibility into stablecoin-based financial systems. While fraud prevention is multi-layered, Endl supports the operational backbone to manage it at scale.

How Endl Supports Safer Stablecoin Operations?

Step 1: Unified Fund Visibility

Instead of fragmented systems involving wallets, card balances, and stablecoins, Endl allows:

A single dashboard view
Consolidated balances
Better tracking of fund flows

This makes it easier to spot anomalies early.

Step 2: Controlled Fund Management

With Endl, you can:

Separate operational funds
Allocate limits
Control exposure

This reduces the level of impact of fraud.

Step 3: Smart Conversions

Since fraud often exploits liquidity, Endl helps:

Manage when to convert funds
Avoid unnecessary exposure
Maintain better control over assets

Step 4: Bulk Operations with Oversight

Instead of manual actions for batch transactions, tracking flows centrally and reducing human errors, this becomes critical when scaling users and transactions.

Step 5: Ensure Compliance

As systems scale, compliance becomes unavoidable. Endl integrates KYC, KYB, and AML checks. It also offers clean logs and audit-friendly records to help ensure compliance.

Choose Endl to move money faster - with more visibility and control.

Conclusion

Stablecoin cards are powerful, but they change how fraud works. It's no longer just card fraud or crypto exploits; it's both combined. That's why scaling safely isn't just about enabling transactions; it's about building the right infrastructure. Endl doesn't just help move money, it helps you manage, control, and scale it safely.

FAQs

1. Are stablecoin card transactions reversible?

No, most stablecoin transactions are irreversible once settled, which makes fraud prevention more important.

2. What is the biggest fraud risk in neobanks?

Account takeovers and card testing attacks are the most common at scale.

3. Can fraud be completely prevented?

No, but it can be minimized with strong monitoring, controls, and infrastructure.

4. When should a neobank invest in fraud systems?

Fraud scales faster than growth if ignored early, thus you must start from day 0.