AoqinRansomware VictimTechnology

Sistel

Fundação Sistel de Seguridade Social offers a range of services including previdência (pension plans) and assistência médica (medical assistance) aimed at providing social security solutions. Their intended clients include individuals seeking financial security and healthcare support. The company also provides additional services such as loan simulations and preventive health packages. With a focus on user experience, they ensure access to a network of accredited healthcare professionals and facilities. Status: Not paid. Data publication: 2026-11-12 11:00 UTC. Revenue: $16M. Employees: 1. Data type: clientsData, confidential, personal.

Incident Details

Threat Group
Aoqin
Victim / Organization
Sistel
Website / Domain
—
Industry Sector
Technology
Country / Region
🇧🇷 BR
Date Discovered
Thursday, November 5, 2026

What This Listing Means

Posting on Aoqin's ransomware leak site typically signals that the threat actor claims to have:

  • ▸Gained unauthorized access to the organization's network via phishing, exposed credentials, or an unpatched vulnerability
  • ▸Exfiltrated sensitive data — potentially including financial records, PII, customer data, or trade secrets
  • ▸Deployed ransomware to encrypt systems and disrupt operations
  • ▸Issued a ransom demand with a deadline to publish all stolen data publicly if unpaid

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