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StealC malware control panel flaw leaks details on active attacker

ID: 1898f2cb-a186-5c57-9071-b54130457ea8

STIX ID: report--1898f2cb-a186-5c57-9071-b54130457ea8

Feed Name: Security Affairs

Threat Score
75/100

Date Published: 2026-01-19

Date Updated: 2026-04-22

Author: Pierluigi Paganini

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Researchers discovered an XSS flaw in the leaked StealC infostealer control panel that exposed operator backend data and active session cookies; leveraging this, they profiled a single operator, "YouTubeTA," who ran campaigns via hijacked YouTube accounts to distribute the stealer and steal credentials from thousands of victims.

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