Dated timelines from post-mortems, status pages, and filings, the failure class, and the test case that would have caught the failure.
Incidents
Synapse Financial Technologies filed for Chapter 11 bankruptcy on 22 April 2024, and its partner banks held $60 million to $90 million less for consumers than Synapse's records showed, according to the Consumer Financial Protection Bureau (CFPB). The failure class is for-benefit-of (FBO) ledger reconciliation across banks; a daily per-bank match exposes it.
Adrian Voss
Incidents
The CrowdStrike outage started on 19 July 2024 at 04:09 UTC (Coordinated Universal Time), when a Falcon sensor content update crashed online Windows hosts until its revert at 05:27, including hosts at financial firms. The failure class is a vendor update sent to every host without staged rollout. Fintech teams should test vendor update canaries, offline payments, and recovery time.
Adrian Voss
Incidents
On 1 June 2018, a partial failure of a core switch in Visa Europe's primary UK data centre stopped the backup switch from taking over, and 5.2 million of 51.2 million transactions sent to Visa's European systems failed over ten hours. Failover tests that inject degraded, half-working components, plus merchant fallback tests, target that failure class.
Adrian Voss
Incidents
The Evolve Bank & Trust data breach of 2024 was a LockBit ransomware intrusion, active in February and May 2024, that exposed personal data of the bank's customers and of its fintech partners' end users. For Banking-as-a-Service (BaaS) programmes, tests can verify the partner data inventory, minimal data in test environments, access reviews, and network segmentation.
Adrian Voss
Incidents
The Capital One outage of 15 to 19 January 2025 followed a local power loss and hardware failure at vendor Fidelity Information Services (FIS), which delayed direct deposits, ACH payments, and transfers. Tests that limit this failure class are vendor failover drills, exactly-once posting of the recovery backlog, and one balance and status across every customer channel.
Adrian Voss
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