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Sonora Suspends Online and Bank Payment Services After Treasury Data Breach

Officials are auditing systems after a 40‑gigabyte leak attributed to Chronus, which has also threatened Mexico’s SAT.

Overview

  • The Sonora Treasury halted payments through its portal and participating banks and merchants while it verifies the integrity of financial systems.
  • Chronus published roughly 40 GB of documents and databases from the treasury and publicly named the federal tax agency SAT as a potential next target.
  • State authorities traced the extraction to a workstation in the Subsecretaría de Egresos, activated their incident-management plan, and filed a complaint with the state Fiscalía.
  • Specialists say the attack combined exploitation of a vulnerability, ransomware, and data exfiltration, with stolen files released and access to compromised systems offered for sale.
  • Analysts warn of identity-theft and fraud risks for citizens and public servants, noting earlier Chronus-linked leaks that exposed data on about 1,200 Hermosillo municipal police officers.