How can machine learning help in credit card fraud detection?
The digital payments market is soaring as the world shifts towards online and card-based payment methods at a faster rate. With such a shift comes the growing issue of cybersecurity and fraud, which is more common than ever. According to a recent report, credit card fraud within the next 5 years will cause global losses of about $43 billion. Another study revealed that as many as 80% of the US credit cards currently in use have been compromised.
Enhancing credit card fraud detection is a priority for all banks and financial organisations. Thanks to machine learning (ML), credit card fraud detection is becoming easier and more efficient.* ML-based fraud detection solutions can track patterns and prevent abnormal transactions.
Common credit card fraud techniques
Credit card fraud rose by a whopping 46% in 2021 when digital transactions became the norm. The US has been a significant contributor to this statistic. This means that the modi operandi of credit card fraudsters have also witnessed change. The various ways in which fraudsters can commit credit card fraud include:
- Creating counterfeit credit cards using legitimate credit card information
- Creating and using new credit card accounts under someone else's name
- Stealing an existing credit card holder's account
- Skimming shoppers' credit cards while swiping and making fraudulent copies
- Manipulating the payer into making multiple credit card transactions against the same invoice/purchase
- Committing card not present (CNP) fraud, that is, making transactions without physical possession of the credit cards via phone or email
- Taking over cardholders' accounts via email phishing and deceptive text messages
How can machine learning help with credit card fraud detection?
Machine learning models can recognise unusual credit card transactions and fraud. The first and foremost step involves collecting and sorting raw data, which is then used to train the model to predict the probability of fraud. The solutions offered by machine learning for credit card fraud detection involve:
- Classifying whether credit card transactions are authentic or fraudulent using algorithms such as logistic regression, random forests, support vector machines (SVMs), deep neural networks along with autoencoders, long short-term memory (LSTM) networks, and convolutional neural networks (CNNs)
- Predicting whether it is the cardholders or the fraudsters using the credit cards through credit card profiling
- Using outlier detection methods to identify considerably different transactions (or 'outliers') from regular credit cards transactions to detect credit card fraud.
The benefits of using machine learning for credit card fraud detection
Machine learning (ML) models are much better than conventional fraud detection models. They can recognise thousands of patterns from large datasets. ML offers an insight into how users behave by understanding their app usage, payments, and transaction methods. Some of the benefits of fraud detection using ML are as follows:
- Faster detection
- Higher accuracy
- Improved efficiency with larger data
A machine learning model can quickly identify any drifts from regular transactions and user behaviours in real time. By recognising anomalies, such as a sudden increase in transactional amount or location change, ML algorithms can minimise the risk of fraud and ensure more secure transactions.
Conventional fraud detection techniques cause errors at the payment gateways that sometimes result in genuine customers being blocked. With sufficient training data and insights, ML models can achieve higher accuracy and precision, reducing these errors along with the time required to be spent on performing manual analysis.
Once an algorithm picks up different transactional patterns and behaviours, it can efficiently work with large datasets to separate authentic payments from fraudulent ones. The models can analyse huge amounts of data in seconds while offering real-time insights for improved decision-making capabilities.
How can Infosys BPM help?
Our ML-based fraud detection solutions and management services help clients protect themselves from malicious practices by leveraging excellent expertise and insights into fraudulent transactions. Our analytical skills, combined with our technology, can help protect your organisation's revenue and brand image.
We offer retail and e-commerce fraud management solutions that include:
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