Sistel
Aoqin listed this organization on its leak site on Nov 5, 2026.
- Listing date
- Nov 5, 2026
- Attack date
- Nov 5, 2026
Listing text
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.
About the group
Aoqin posted its first listing on Nov 4, 2026 and has listed 5 organizations to date.
Learning center
What does this listing mean?
Ransomware groups move data out of the organization before encrypting systems and threaten to publish it if the ransom is not paid. This method is called double extortion.
The listing shows that the group claims to have targeted the organization. Whether the data was published is shown by the later status of the listing.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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