Accertify’s Stuart Mann Discusses the Evolution of Fraud Prevention with Green Sheet

Accertify’s Stuart Mann recently spoke with Green Sheet about how fraud prevention is evolving from a transaction-focused discipline into a broader, lifecycle-based approach centered on identity, behavior, and continuous decisioning. The Q&A explores how merchants are reassessing traditional fraud strategies as attacks become more sophisticated and increasingly difficult to distinguish from legitimate customer activity.

One of the central themes of the discussion is that fraud prevention can no longer rely solely on isolated controls at checkout. As Mann explains, organizations are seeing fraud signals emerge much earlier in the customer journey, from account creation and login activity through post-purchase interactions. This shift is pushing businesses toward more connected approaches that can build context over time rather than making decisions based on a single transaction event.

The conversation also highlights how the fraud landscape itself is changing. Advances in AI and automation are enabling attackers to mimic legitimate customer behavior more effectively, reducing the usefulness of traditional rules-based systems. In response, many organizations are adopting layered strategies that combine behavioral analytics, machine learning, device intelligence, and shared network data to improve decisioning accuracy while minimizing friction for legitimate customers.

Another key takeaway from the interview is the growing importance of balancing fraud prevention with revenue optimization. Mann notes that overly aggressive controls can unintentionally block good customers, creating hidden revenue loss through false positives and abandoned transactions. Increasingly, merchants are recognizing that effective fraud management is not just about preventing losses, but about enabling more confident approvals and better customer experiences.

From Accertify’s perspective, this is why lifecycle-based decisioning and platform approaches are becoming increasingly important. By connecting signals across the customer journey and continuously evaluating risk in context, businesses can make smarter decisions that empower them to say yes to more customers while reducing fraud pressure and supporting long-term growth.

Read the full Q&A in Green Sheet.