Western Union operates one of the largest cross-border money movement networks on the planet, moving funds across more than 200 countries and territories through both digital channels and hundreds of thousands of physical agent locations. That kind of infrastructure - a blend of legacy systems, modern APIs, and a massive agent network - presents a uniquely complex threat surface. Every transaction is a potential attack vector, every agent endpoint a node that needs securing, and the regulatory landscape spans jurisdictions that don't always agree on what compliance even looks like.
For a security team, this isn't a single-stack problem. It's fraud detection at scale, transaction integrity across currencies and corridors, identity verification for millions of users, and defending systems that handle real money for families and businesses who depend on reliability. The threat model runs from credential stuffing and social engineering to sophisticated laundering schemes and nation-state interest in financial infrastructure. The company has over 8,000 employees and has been building communication and money transfer systems for more than 170 years - long enough to accumulate both deep institutional knowledge and the kind of technical debt that keeps security engineers up at night.
Western Union's security work spans securing digital platforms (app and web), protecting the agent network, ensuring compliance across regulatory regimes, and building the fraud and risk tooling that keeps the network trustworthy. The company values collaboration across international teams and positions accessibility and reliability as core to its mission - meaning security isn't bolted on, it's load-bearing.
