← Promtransbank

2023 Promtransbank — ESIA data exposure

2023 Unknown records affected Share on X

Data compromised

ESIA authentication data, loan applicant info

Technical writeup

Contractor error: Promtransbank saved ESIA (unified auth) data to public esia.log file. Data of loan applicants from Nov 2022 updated in real time. Hacker group exploited vulnerability.

Root cause

Contractor misconfiguration; data in public directory

References