Cardflo for Businesses with high fraud monitoring needs.
Cardflo offers robust fraud monitoring capabilities tailored for businesses with elevated fraud risks. Our platform integrates advanced detection and prevention tools to safeguard transactions, protect revenue, and ensure compliance.
We provide the intelligence needed to identify and mitigate fraudulent activities efficiently.
- Industry
- Businesses with high fraud monitoring needs
- Category
- High-risk
- Cardflo support
- Yes
The overview
Businesses with high fraud monitoring needs typically operate in sectors where digital goods, high ticket sizes, or rapid transaction volumes attract sophisticated criminal activities. In the payments stack, fraud monitoring sits between the gateway and the acquirer, evaluating transactions before they are submitted for authorisation.
These entities must balance the need for low friction with the requirement to prevent merchant identification number issues and excessive chargeback ratios. Effective monitoring relies on a combination of rule-based logic and behavioural analysis to identify anomalies such as velocity spikes or mismatching geographic data.
Because payment schemes impose strict thresholds on dispute rates, failure to maintain a robust monitoring framework can lead to fines or the permanent termination of merchant accounts.
Modern frameworks utilise device fingerprinting and proxy detection to assess risk in real time, ensuring that only legitimate traffic reaches the clearing and settlement stage of the payment lifecycle.
How it works
Data ingestion and enrichment
The process begins at the checkout where the gateway captures primary transaction data alongside secondary signals like IP addresses and device IDs.
This information is enriched with external data points to create a comprehensive profile for the fraud engine to analyse before the authorisation request is sent to the issuer.
Rule-based filtering
Transactions pass through a series of static and dynamic rules tailored to the merchant category code. These filters identify known malicious attributes, such as blocked BIN ranges or high-risk geographic locations.
If a transaction triggers a high-severity rule, it is automatically declined to prevent potential financial loss and scheme penalties.
Behavioural scoring model
The monitoring system assesses user behaviour against historical patterns to assign a probability score to the transaction. This includes evaluating session duration, navigation paths, and velocity limits.
A score above a specific threshold may trigger a challenge, such as a 3DS check, or move the transaction to manual review.
Post-authorisation monitoring
Effective fraud management persists after the capture stage. Systems monitor for suspicious patterns that emerge over hours or days, such as credit card testing or large scale account takeovers.
This allows the merchant to void transactions before shipment or issue proactive refunds to avoid the risk of a formal dispute.
Why it matters
Preserving merchant account stability
Acquirers and card schemes monitor the ratio of fraudulent transactions to total sales volume. If a merchant exceeds established thresholds, they may be placed into monitoring programmes such as the Visa Fraud Monitoring Programme.
This results in higher scheme fees, mandatory audits, and potential loss of processing privileges. Robust monitoring keeps these metrics within acceptable ranges to ensure continuous operations.
Reducing operational overheads
High-risk businesses often face significant costs related to manual transaction reviews and representment processes. By automating the detection of obvious fraud and refining the accuracy of scoring, merchants can minimise the human resources required to manage disputes.
This allows the business to focus on expanding into new markets without a linear increase in security-related labour costs.
Regulatory notes
PSD2 and SCA compliance
In the European Economic Area, the Revised Payment Services Directive (PSD2) mandates Strong Customer Authentication (SCA) for most electronic payments.
Businesses with high fraud monitoring needs must ensure their systems can handle SCA exemptions, such as low-value transactions or Transaction Risk Analysis (TRA), to maintain a smooth user experience while remaining compliant with local regulatory standards for security and consumer protection.
Use cases
Digital marketplaces
Platforms facilitating peer-to-peer sales often face account takeover risks and synthetic identity fraud. Monitoring protects both the buyer and the platform from financial liability and reputational damage.
Luxury retail e-commerce
High-value physical goods are primary targets for friendly fraud and stolen credentials. Precise monitoring ensures that legitimate high-value customers are not falsely declined while blocking high-risk shipment attempts.
Subscription based services
Recurring billing models are susceptible to card testing where fraudsters use the merchant to validate large lists of stolen card details. Monitoring prevents high decline rates that can trigger acquirer scrutiny.
By the numbers
Typical percentage of revenue lost to fraud and dispute costs for high-risk merchants without an optimised monitoring framework in place.
Industry expected improvement in approval rates when moving from basic static rules to a data-enriched behavioural monitoring model.
Standard threshold set by major card schemes for monthly fraud-to-sales ratios before a merchant is considered for a monitoring programme.
Related terms
Book a scoping call to see how Cardflo would set you up.
What's included.
- Implementation of device fingerprinting to recognise returning users across different accounts and sessions.
- Dynamic adjustment of 3DS triggers based on real-time risk scores to optimise conversion rates.
- Velocity checking to prevent rapid successions of small transactions from the same card or IP.
- Geofencing capabilities to block or scrutinise transactions originating from high-risk jurisdictions automatically.
- Analysis of bin-to-country mismatches to identify potential proxy usage or stolen payment credentials.
- Customisable white and black lists for managing known trusted customers and repeat offenders.
- Shadow testing environments for evaluating new fraud rules before applying them to live traffic.
- Detailed reason codes for fraud-based declines to assist in identifying specific attack vectors.
- Integration with network tokenisation to enhance security and reduce the risk of data breaches.
- Automated alerts for sudden spikes in dispute notifications or retrieval requests from the acquirer.
Talk to an acquiring specialist about your MID setup.
Common questions.
What is the difference between a soft decline and a hard decline in fraud monitoring?
A hard decline occurs when an issuer permanently rejects a transaction, often due to a stolen card or a closed account, and these should not be retried.
In contrast, fraud monitoring systems might trigger a soft decline if a transaction is deemed suspicious but not definitively fraudulent. A soft decline allows for a retry after successful 3-D Secure authentication or other step-up verification.
Understanding this distinction is vital for high-risk merchants who must maintain high authorisation rates while simultaneously preventing fraudulent capture.
How do card scheme monitoring programmes impact high-risk merchants?
Visa and Mastercard operate specific programmes like the Visa Fraud Monitoring Programme (VFMP) and the Excessive Chargeback Programme (ECP). If a merchant's monthly fraud or dispute count exceeds certain basis points relative to their total volume, they enter these programmes.
This usually involves increased transaction fees, additional reporting requirements, and a timeline for remediation. Failure to reduce fraud levels can result in the acquirer terminating the merchant's ability to accept card payments entirely.
Can fraud monitoring prevent friendly fraud or chargeback abuse?
Friendly fraud occurs when a legitimate customer disputes a valid transaction. While traditional fraud monitoring focuses on preventing stolen card usage, modern tools use soft-descriptors and robust transaction logging to help merchants win representments.
By capturing detailed evidence of the customer's identity and interaction with the service, merchants are better equipped to challenge these disputes. However, the most effective preventative measure is often providing clear communication and easy refund processes to discourage the customer from contacting their bank.
What role does the Merchant Category Code (MCC) play in fraud risk?
The MCC is a four-digit number used by issuers and acquirers to categorise a business by the type of goods or services it provides. Certain MCCs, such as those for gaming, adult content, or travel, are classified as high-risk by nature.
Issuers frequently apply more stringent fraud filters to transactions from these codes, leading to higher decline rates. Merchants in these categories require more sophisticated monitoring to demonstrate to their acquirer that they have control over their fraud environment.
How does 3-D Secure 2.0 assist businesses with high fraud needs?
3-D Secure 2. 0 (3DS2) provides a data-rich environment for risk-based authentication.
It allows merchants to send much more information to the issuer, such as the customer's device ID and purchase history. This often results in a frictionless checkout where the issuer approves the transaction without needing a password.
For high-risk transactions, 3DS2 enables a liability shift, meaning the issuer, rather than the merchant, becomes liable for fraudulent chargebacks if the transaction was successfully authenticated.
What are the common indicators of a card testing attack?
Card testing is an automated process where fraudsters attempt to verify thousands of card numbers. Common indicators include a high volume of low-value transactions, high decline rates for CVV or expiry date mismatches, and many attempts from the same IP address or device.
Businesses with high monitoring needs use velocity filters to detect these patterns in seconds, automatically blocking the source to protect the merchant's reputation with their acquirer and the card networks.
Ready for velocity?
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