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Neither the individual who initiated the first card-not-present transaction nor the organization that pioneered a customer convenience channel could have foreseen the trajectory and evolution of payment systems. Fast-forward to today – the commerce landscape continues to be propelled by consumer-preferred payment methods that are convenient, swift, and efficient.

As new mandates and schemes have emerged, payment types and methods have also evolved, incorporating nuanced approaches tailored to various regions. The evolution of payments has triggered additional data points to gather and utilize. In some cases, this data has extensively grown to the point that the industry has had to adopt big data strategies practically and safely.

Looking back, we have transitioned from minimal to enriched data collection per transaction. This shift is driven by several factors, including the entire consumer journey, expansion of payment methods and channels, promotional and reward value retention, compliance requirements (i.e., 3DS transactions), recurring transactions, and refunds/returns – all aimed at orchestrating data to enhance a positive consumer experience and personalized customer service.

Banks, merchants, and billing organizations are now confronting new challenges spawned by this evolution. These challenges encompass onboarding new accounts, consumer financing, and personalizing services to enrich consumer experiences. Simultaneously, fraudsters are intensifying threats through artificial intelligence (AI) for account takeover (ATO), card testing/bot attacks, and the swift creation of new synthetic identities using information from the dark web.

Organizations and companies have acknowledged the significance of real-time responses to counteract these threats and have adopted the principle of precision as the cornerstone of preemptive measures. Steered by payment optimization specialists and data scientists, single intelligence adoption creates a new frontier, applying predictive decision-making capabilities for precise and informed decision-making.

The new frontier

With the advent of large language models, organizations have recognized the critical role of AI in their business frameworks. According to a recent BCG study, 89% of executives have identified AI and generative AI as “top-three” technological priorities for 2024.

AI, encompassing a variety of tools and technologies, offers expedited updates to fraud detection models and enhances the capacity to shift strategies, thus favoring proactive precision over-reactive measures. Today, organizations can accurately forecast emerging trends and fraud threats by harnessing historical data, integrating it into sophisticated AI models, and utilizing predictive modeling.

However, predictive modeling alone can lead to inconsistent decision-making without the support of comprehensive data and collective intelligence. To address this issue, organizations are incorporating the concept of signals into their payment and decision management strategies, employing various intelligent data enrichment tools.

How signals work

Signals provide succinct, meaningful intelligence within vast, complex data sets, offering sigmoidal insights (i.e., probability between 0-1, distinguishing between genuine, fraudulent, compliance-related, business policy, environmental, promotional, and other trends). Currently, banks, consumer financing providers, merchants, and utility companies face the challenge of ensuring that their payments originate from legitimate versus fraudulent sources or comply with policy.

A signal focuses on probability, revealing the true nature of a transaction. A signal is an insight that can presented as a probability to use within an AI feature selection, process, or rule-strategy, adding a layer of precision to the decision-making process. This evidence validates the nature of fraudulent transactions but also builds consumer profiles to elevate the thinking beyond fraud and risk management to leverage intelligence for enhanced consumer journeys.

Common trends include:

  • Card testing: Increasingly perpetrated by AI bots rather than humans, this fraud method validates a stolen card number for fraudulent purchases
  • Synthetic ID account creation: A fraudulent individual creates an account using real and fake information to commit fraud
  • ATO: An individual gains unauthorized access to a legitimate account

Signals informed by a consortium of trends can verify if a card is involved in a bot attack and will decline transactions without damaging trust and reputation.

The role of signals in fraud prevention

In the case of a flagged transaction, it involves not just one signal but a combination of several indicators:

  • Multiple transactions within a short timeframe across various organizations
  • Historical patterns of fraudulent activity in the region
  • Shared intelligence from the network indicating similar fraud attempts
  • Compromised data from a recent data breach

This comprehensive perspective enables the system to make a more informed decision. While a single signal may not be definitive, multiple signals provide a solid foundation for decision-making.

Enhancing decision-making in payments

As AI technologies rapidly advance, using signals becomes crucial to help organizations adapt their strategies based on historical data, especially against AI-augmented fraud. 

The real-world application

In this AI-driven era, organizations must take the lead in establishing trust with every new account created. Consider two simultaneous scenarios for a consumer attempting to request a loan, pay a bill, or purchase with a merchant, referred to as Event A and Event B:

Event A: Credentials are flagged as having been involved in a card testing attack. Further analysis of historical data indicates that the supposed owner of the account does not exist within the payment’s consortium. As a result, the transaction is declined, and the account is flagged – a clear case of synthetic identity fraud.

Event B: Conversely, a consumer with verified card information wishes to request a service (loan, bill payment, or merchandise), and the process is seamless. Although the card information is clear of any bot attack association, other details—such as time on file, behavior, patterns, and digital identity—are confirmed with their device identity, all in real time.

In both scenarios, signals are pivotal. They assist in declining or flagging fraudulent activities but ensure a smooth process for legitimate transactions. A signal is a data enrichment derived from extensive data analysis across large datasets extending from ACI’s expertise that allows for more variety and selection during an AI feature selection process or a fraud strategy.

In the scenario of Event A, if the flagged transaction decision is enriched by the signals across the AI, it will establish the legitimacy of the transaction in real time. Meanwhile, with the signal indicator for the legitimate transaction, the organization can establish trust with its digital identity for a seamless flow.  

Signals are indispensable in differentiating legitimate transactions from fraudulent ones. They offer a sophisticated approach to fraud prevention, moving beyond mere historical data analysis to a dynamic and real-time decision-making process.

The future of payments with signals

As the world undergoes a technological shift, harnessing AI and machine learning to prevent threats is essential. Democratizing data and making intelligence accessible is crucial for forming an intelligent shield around payments.

Using signals will accelerate as organizations find cost-effective ways to prioritize consumers. These signals also help understand behaviors and preferences, supporting targeted efforts towards consumer centricity.

About ACI Worldwide

Signals are central to ACI’s intelligent decision-making. Our patented AI models and network intelligence provide access to critical insights, establishing ACI as a strategic partner for global organizations. Signals are not only proof of flagging an account or a transaction as fraud but are also used to deliver good transactions for customers and prospective customers. With nearly 30 years in the AI ecosystem and a dedicated data science team focused on enhancing the customer experience, ACI remains ahead of the curve.

VP Analytics & Optimization Payments Intelligence

A certified fraud and analytics professional with over 20 years of experience in payment acceptance optimization, global fraud prevention, digital identity verification and authentication, statistical data analysis, machine learning, and artificial intelligence enterprise real-time financial decision technology solutions. Erika leads a global team of fraud professionals across six different countries overseeing customer analysis and implementing state-of-the-art intelligent solutions to reduce operational costs and generate incremental revenue. Leveraging incremental learning, pattern detection and data mining techniques, Erika’s efforts have delivered best-in-class performance for leading merchants across the globe. Erika’s contributions have been recognized with the ‘Forty under 40’ and Women in Payments Educator in 2019. Her passion for her work drives her pursuit of excellence in the industry.