Union54
The YC-backed Zambian card-issuing API that served ~100 African fintechs — until a $1.2B attempted-fraud wave and Mastercard chargeback breaches forced a 2022 shutdown, cutting off virtual dollar cards at Eversend and dozens of peers overnight. Africa's Synapse-grade cautionary tale.
Tracked neobanks on its rails
Other BaaS middleware
Client list shows tracked neobanks with a publicly documented relationship — not a complete customer book. Sourced from issuer disclosures and public reporting; suggest a fix.