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FintechSeries A Payments StartupFeatured

Closing 87% of Auth Vulnerabilities for a Series A Fintech

Found JWT replay vulnerability, session fixation, and broken access control across 11 endpoints.

0%
Vulnerability surface reduced
under 2s
Time to detect anomalous login
0
SOC 2 auth findings

The Challenge

After a near-miss with a competitor's breach, the founding team needed an honest read on their auth surface. They had built fast, hadn't paused to harden.

The Solution

Six-week engagement: threat-model their auth flow, automated fuzz-test every endpoint, rewrote token issuance with rotating refresh tokens, added per-user rate limits, instrumented anomaly detection.

The Results

Reduced auth-related vulnerability surface by 87%. Cut suspicious-login false negatives to under 0.4%. Achieved SOC 2 Type 1 with zero auth findings.

87%
Vulnerability surface reduced
under 2s
Time to detect anomalous login
0
SOC 2 auth findings

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