Breach occurred at Navia Benefit Solutions, a 3rd party, not HackerOne infra.
Around 287 HackerOne employees PII leaked.
Navia delayed breach notifications by weeks. Filed at Maine AG.
Navia was independently breached. Over 10K US employee's PII exposed.
Reports point to an auth flaw (BOLA-type) enabling access to employee PII (SSNs, DoB, addresses, benefits data).
Exposure window: Dec 2025 to Jan 2026.