GREAT LAKES CREDIT UNION

Great Lakes Credit Union (GLCU), located in Bannockburn, Illinois, manages $1.4 billion in assets, serves 111,090 members, and employs approximately 231 people. The credit union faced challenges with disjointed security and risk systems, limited capacity within a small security team, and manual, labor-intensive processes. These issues made it difficult to correlate data for actionable insights and expand cyber event monitoring, leading to inefficiencies in operations and delayed responses to potential threats.

THE CHALLENGE

“We had a targeted fraud ring that was attempting member-to-member transfers over our set limit. We detected that through DefenseStorm, and so by setting a dollar threshold, we were able to be alerted very quickly and made some internal changes to prevent it going forward.”

Diana Byers
VP of Enterprise Risk Management
Great Lakes Credit Union

Fraud rings threaten to exploit vulnerabilities in member-to-member transfers and P2P payments

Potential losses from undetected ACH fraud and account takeovers

Difficulty correlating member profile changes with fraud patterns

Constant need to manually tweak triggers to keep up with evolving fraud tactics

THE RESULTS

DEFENSESTORM IMPACT

Identified and stopped fraud rings quickly, reducing financial exposure

Built triggers for ACH, P2P, and IP/device-based alerts, catching fraud before major losses occurred

Shift from reactive loss recovery to proactive detection of early fraud indicators

OUR SOLUTION:

FRAUD DETECTION

MORE CASE STUDIES

FIRST FINANCIAL BANK

First Financial Bank, headquartered in Abilene, Texas, oversees approximately $14 billion in assets and employs over 1,400 staff across 83 offices. First Financial faced multiple challenges, including inefficient incident monitoring and response, disjointed cybersecurity solutions that led to time-consuming processes, and difficulties in navigating multiple systems to retrieve information during incidents. The bank sought a cyber risk management solution to streamline their ability to manage, monitor, and mitigate cyber events.

CNB TEXAS

Citizens National Bank of Texas, headquartered in Waxahachie, manages more than $1.9 billion in assets with a staff of 159 employees. The bank struggled with limited internal cybersecurity expertise, which left it vulnerable to threats. It needed improved detection, monitoring, and reporting capabilities to reduce risks and enhance visibility across its digital environment.

PREVAIL BANK

Prevail Bank, located in Medford, Wisconsin, operates with $970 million in assets and 121 employees. The bank’s existing Security Information and Event Management (SIEM) solution offered limited log coverage and visibility, hindering its ability to monitor systems effectively and respond quickly to potential threats.

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