Built to serve Spanish-speaking communities across the U.S., Seis offers instant credit, no-fee accounts, and banking access without requiring a Social Security Number. That mission-first mindset is what drives the company forward—but it also puts Seis on the front line when it comes to fraud. "The onus of fraud lies at the lap of the fintech—it is not the responsibility of the partner bank, so any fraud that occurs is theirs alone to manage," said Dustin Eaton, Head of Fraud, Risk & Compliance at Seis.
Flagright’s exceptional customer support has played a pivotal role in facilitating the expansion of our AML operations. They efficiently address all our requests.
Seis had no illusions about building from scratch. As Dustin put it: “Buying versus building is not really something that is even considered in most cases. Building a transaction monitoring suite is a tremendous undertaking. Our option really was to find a product that would fit.”
Instead of spinning up an internal build, Seis hit the ground running with a fraud management platform that delivered results out of the box. Within days, they were leveraging:
As Dustin put it, "The complexity of building a tool that does transaction monitoring, case intake, and dispositions is something that just needs to be done right. Buying it packaged and ready makes more sense than trying to duct tape different systems together."
Rule Building That Scales
Once live, the Seis team built their fraud strategy using Flagright’s no-code rules builder. They leaned into configurable tools to move quickly—creating, testing, and refining detection rules without waiting on engineering. The focus was on building a system they could control directly and adjust as needed.
Regex-based matching was just one of many capabilities. The team combined dynamic filters, layered logic, and precise conditions to isolate risky behavior. Rules could be customized based on transaction types, time windows, customer attributes, and geographies, allowing them to address specific fraud patterns without broadly impacting legitimate activity.
Iterate or Fall Behind
"There is consistent change taking place in the industry, and the fact of the matter is, if you don’t evolve with it, you risk falling behind," said Dustin. Seis understood that staying effective meant staying adaptable. Their fraud program became a living part of the business. The team regularly tuned detection logic, introduced new signals, and explored ways to integrate AI enhancements. Prevention continued to evolve in lockstep with Seis’s product and customer needs.
"Most companies are not in a position where they build something and then just don’t iterate. Because it won’t satisfy the needs of customers. As AI, machine learning, or even SAR intake processes evolve, your system has to keep up—or it quickly becomes outdated."That same mindset extended to how Seis thought about fraud at a strategic level—it was a boardroom topic. "Fraud is often viewed—as I think incorrectly—as a cost center. When that happens, you're not going to prioritize engineering resources over product rollouts or app enhancements, which creates resistance to the critical updates needed in a tool like this," Dustin explained.
Support That Shows Up
The tools mattered—but so did the people behind them. As Dustin put it, "One thing I value is vendor relationships. Historically, I’ve signed contracts where challenges arise and the response is delayed or nonexistent. With Flagright, there was a consistent application of quality customer service to deliver on promises." From roadmap feedback to proactive support, Flagright felt less like a vendor and more like a partner plugged into Seis’s mission.
The Seis team found that support extended beyond technical setup. Flagright stayed engaged through roadmap feedback, regular check-ins, and ongoing collaboration—taking an active role in helping Seis evolve its approach, adopt new features, implement workflow improvements, and apply additional optimizations in line with their goals.
The Bottom Line
Seis didn’t treat fraud prevention as a side project. They treated it as core infrastructure—vital to their product, growth, and customer trust. With the right platform and the right partnership, they’ve built a fraud defense that’s fast, flexible, and built to evolve.
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