AI fraud detection: the complete guide

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AI fraud detection uses machine learning to analyze transaction data, detect anomalies, and prevent financial fraud in real time. With digital payments on the rise, companies face growing fraud risks and false positives that overwhelm traditional systems

JP Morgan has been using to AI-powered fraud detection for more than 3 years to handle rising fraud attempts and false positives. By monitoring live transactions, the bank has since reported fewer fraud cases, reduced false positives, and an improved customer experience


AI fraud detection key takaways:

  • AI-powered fraud detection helps prevent payment fraud, account takeover, identity theft, and other types of financial crime.
  • Dynamic rules, real-time monitoring, and automation reduce false positives and improve fraud detection accuracy.
  • Despite its strengths, financial fraud detection faces challenges like AI black boxes and limited use against offline fraud risks.

What is AI in fraud detection?

AI in fraud detection typically refers to machine learning models able to spot patterns. It works by applying a set of rules (known as an algorithm) to a scenario to make a decision. In this case, decide whether there is a threat of fraud, or not.

But the advantage is that these rules evolve over time, as the technology is fed more information. AI “learns” from previous scenarios, and gets more and more accurate over time.

AI models include:

  • Natural language processing (NLP) models: enrich and categorize data into granular groups
  • Captcha / reCaptcha: automated test to separate humans from computers
  • Graph neural networks (GNNs): a data processing system which maps out the relationship between different pieces of information to better understand an overall

How does AI work to detect financial fraud? A few examples

Accordingly to our latest fraud study, 90% of US companies reported being targeted by cyber fraud in 2024. There are several steps for fraud detection that AI is involved with:

  1. Data collection: continuous data collection is at the core of fraud detection. It enables businesses to set their ‘normal’ range of data. Some of the data collected by AI platforms includes transactional data like amount or account details, and behavioral data, like time spent purchasing.
  2. Anomaly detection: after setting the precedent for ‘normal’, AI models are relied upon to flag ‘out of range’ data in real-time and identify patterns.
  3. Continuous accuracy improvements: since AI models learn from themselves, they are less likely to make the same mistakes over and over. This helps to reduce false positives.
  4. Alerting and reporting: when fraudulent threats are suspected, it’s imperative to move to the next stage of fraud prevention: response. AI can alert humans in real-time, but it can also release a set of actions to protect the business, such as blocking outgoing payments, or removing email attachments.

What are the benefits of AI fraud detection?

PwC and Bank of England studies found that AI outperforms manual controls in fraud detection. With no controls in place, fraud risks increase sharply. AI-powered fraud detection gives organizations a clear edge in fighting financial fraud.

There are several key benefits, including:

  • Dynamic vs static rules
  • Real-time vs lag
  • Cost of prevention vs reaction

Various finance professions are thus impacted; for example, treasury departments must prepare for the AI shift.

Dynamic rules

Before AI, fraud detection systems relied on applying static rules to data in order to find the anomalies. But this could cause inaccuracies and false positives, since the rules never evolved unless the entire algorithm was changed.

Instead, AI learns from itself, setting dynamic rules that change with the circumstances. For example, an email sorting platform might evolve its rule for categorizing junk emails once it discovers ‘off-brand’ domains. After learning that an email from googlee.com has a high likelihood of spam, the AI platform can start categorizing all typo’d domain names into the junk folder. And this personalization can be scaled up to thousands of customers and vendors each month.

By applying dynamic over pre-defined rules, companies using AI can benefit from higher accuracy. With fewer risks of false positive results, they’ll also keep user experience intact, generating lower friction within the sales process.

Real-time fraud detection

Prior to the adoption of AI for fraud detection, companies were faced with employing a full time statistician to continuously analyze for threats. Not only was this a costly venture, but it relied on this individual not making manual errors, and working quickly. This left companies at a significant disadvantage – they couldn’t scale up and maintain the same levels of oversight.

But with AI algorithms working in real-time, organizations can benefit from scale without the same costs. This leads to further benefits when suspicious activities are detected – since AI algorithms can instantly block, freeze or protect their accounts, and report back to team members instantaneously. Having this all completed while continuing to assess more data in the background makes AI the multi-tasker of the times.

Long term cost optimization

It’s no secret that employing AI to prevent fraud can be a costly investment. But with its heightened levels of accuracy, speed, and ultimate success, AI might ultimately provide a long-term saving. That’s due to the lower likelihood of realized fraud events.

By effectively preventing cases of fraud, companies face fewer reimbursements, fewer embarrassing reputational problems, and reduce their risk of fines for non-compliance.

It can be compared to insurance – since you never really know if you’ll need it. But with 90% of US companies targeted at least once in 2024, it’s a question of when, not if. Wouldn’t you rather invest in order to be better protected against fraud?

Download our latest fraud report for more details about B2B fraud!

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What are the types of fraud AI powered solutions can detect?

One of the best use cases for AI in fraud detection is to prevent payment fraud. Some of the other types of fraud that AI can detect include:

  • Chargeback fraud: shopify is one platform that automatically assesses the risk of chargeback fraud for an online payment, based on the historical behavior of the customer
  • Fake account creation: a dedicated bot detection platform can validate the identity of website’s your account holders and block the attempted creation of fake accounts
  • Credit card fraud and identity theft: AI systems are employed by financial institutions to accurately track user behavior, and flag changes that could suggest that card details have been stolen

And many others (account takeover, deepfakes, etc.)!

Fraud can have significant consequences on organizations – and not only financial losses. Experienced treasurer Lee-Ann Perkins answered our questions about the financial toll of payment fraud in our latest Fraud Flash video!

What are the challenges of using AI to detect fraud?

Being open about the key challenges of using AI in fraud detection will support companies in applying the right systems, practices and procedures to make the investment of their AI technologies effective.

The two top challenges are:

  • Black boxes
  • Ineffectiveness against non-digital threats

Black box

Many AI systems operate as “black boxes,” where decision-making processes are hidden. This lack of transparency creates trust issues, ethical implications, and makes it harder to explain errors. Companies relying on third-party AI-powered fraud detection should demand clear reporting and user-friendly interfaces.

Getting around this challenge isn’t easy, especially if you’re relying on third parties to build your AI platforms. Remember to be transparent and check for manageable interfaces, ensuring your team members can navigate the platform with confidence.

At Trustpair, we apply AI in high-risk cases but rely on proprietary algorithms developed by experts. Our solution monitors transaction data in real time to flag anomalies like new account numbers or suspicious company domiciliation. This helps teams prevent financial fraud and process only legitimate transactions.

Ineffectiveness against non-digital threats

The other key challenge of using AI is that it’s far less effective against offline fraud threats.

For example, in a classic case of stolen identity, imagine that a fraudster heads to the ATM to make a withdrawal of their victim’s funds. Once the perpetrator knows the PIN number, they can access the entire account, withdrawing as much as they need. In examples like these, AI fraud detection and prevention controls are useless, since the fraudster is working in physical capacity, rather than digital.

AI technology, one of the path for fraud prevention

Technologies like Natural Language Processing (NLP), Captcha, and Graph Neural Networks (GNNs) are advancing AI-powered fraud detection. They improve fraud detection accuracy, support dynamic rules, and reduce fraud risks with real-time reporting.

AI brings powerful tools, but companies need solutions that are practical and reliable. Trustpair provides this by using proprietary algorithms to spot anomalies in vendor data, block fraudulent transactions, and secure payments in real time. Request a demo to learn more!

 

FAQ
Frequently asked questions
Browse through our different sections and find the answer to your question.

AI for fraud detection works by spotting anomalies, verifying data, and learning from historical behavior. This improves fraud detection accuracy and helps organizations adapt to evolving threats.

Artificial intelligence (AI) systems can detect fraudulent transactions, prevent transaction fraud, and reduce human error compared to rules-based systems. They are widely used by financial institutions and large enterprises to fight fraud in real time.

Trustpair does not rely on AI for fraud prevention but uses a proprietary algorithm. This solution cross-checks vendor account details with external databases to block fraudulent activities.

If potential fraud or fraudulent patterns are detected, Trustpair automatically prevents the payment from being processed, even if an employee mistakenly authorizes it. This helps ensure compliance, reduce fraud risks, and protect payment integrity.

The financial services industry uses AI-powered fraud detection to monitor transaction data in real time. Banks apply machine learning models to identify suspicious activities like unusual payment locations, sudden transaction spikes, or atypical login behavior.

AI models learn from historical data to adapt to evolving threats, improving financial fraud detection over time. Some banks also use AI for behavioral biometrics, automated fraud investigations, and real time monitoring. The goal is to combat fraud, reduce false positives, and strengthen defenses against financial crime.

Yes. AI for fraud detection can spot fake accounts by analyzing transaction data, behavior patterns, and anomalies that don’t match legitimate users.

By applying machine learning and AI-powered fraud detection, systems identify signs of identity theft, account takeover, or fraudulent activities. This helps financial institutions detect potential fraud early, strengthen compliance, and reduce fraud risks.

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