Fraud detection with machine learning requires large datasets to train a model, weighted variables, and human review only as a last defense. With advances in computer technology and ecommerce also comes increased vulnerability to fraud. Hackers are continuously finding new ways to target undeserving victims, from stolen credit card details to false accounts. Any business or individual who uses online payment sources is open to fraud. In 2015, financial fraud -- including payment cards, remote banking and cheques -- rose a staggering 26 percent from the previous year, totaling a cost of £755 million.
Any business that sells goods or services online is vulnerable to attack by fraudsters. This can be using stolen credit card details for purchases online, creating false accounts and even voucher code abuse. The cost of this fraud can be calculated in the multi millions, with chargebacks and related costs plaguing online businesses. In the UK it is the most common crime of all, with 2.47M offences in 2015/16 alone. The traditional approach to tackling this problem is to use heuristic rules and business logic to try to'predict' whether a new transaction that the business is seeing is fraudulent or not.
Machine learning has been instrumental in solving some of the important business problems such as detecting email spam, focused product recommendation, accurate medical diagnosis etc. The adoption of machine learning (ML) has been accelerated with increasing processing power, availability of big data and advancements in statistical modeling. Fraud management has been painful for banking and commerce industry. The number of transactions has increased due to a plethora of payment channels – credit/debit cards, smartphones, kiosks. At the same time, criminals have become adept at finding loopholes.
For years, fraud has been a major issue in sectors like banking, medical, insurance, and many others. Due to the increase in online transactions through different payment options, such as credit/debit cards, PhonePe, Gpay, Paytm, etc., fraudulent activities have also increased. Moreover, fraudsters or criminals have become very skilled in finding escapes so that they can loot more. Since no system is perfect and there is always a loophole them, it has become a challenging task to make a secure system for authentication and preventing customers from fraud. So, Fraud detection algorithms are very useful for preventing frauds.
Holiday shopping has changed a lot since the first Cyber Monday in 2005. Consumers spent just $608 million on that inaugural Cyber Monday. This year, we spent more than $3.5 billion – with about a third of it coming from mobile devices. Online and mobile shopping are expected to continue growing apace through the rest of the holiday season. Unfortunately, they're not the only things on the rise: As chip-enabled cards have made brick-and-mortar shopping safer, fraudsters are increasingly targeting online stores.