high severity June 17, 2026 · 3 min read Unverified claim — what this is

saude.mt.gov.br Listed by lockbit5 Ransomware Group

If you are a customer of saude.mt.gov.br, here’s what is being claimed, and what it would mean for you.

The State Secretariat of Health of Mato Grosso (SES-MT) serves as the primary executive body of the...
— from LockBit’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

saude.mt.gov.br Listed by lockbit5 Ransomware Group

On June 17, 2026, the LockBit5 ransomware group added the State Secretariat of Health of Mato Grosso (SES-MT) to its leak site, claiming that internal files had been exfiltrated from saude.mt.gov.br.

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What Public Reporting Shows

Public reporting indicates the Brazilian state health department suffered a ransomware intrusion in which attackers copied internal documents before encrypting systems. The exact number of individuals whose personal information appears in the stolen files remains unknown. Available reporting describes the data as internal files rather than a structured database of patient records, though health-related government systems routinely contain names, national identification numbers, addresses, medical appointment details, and employee payroll information. LockBit5 set a public deadline for publication or negotiation, consistent with the group’s standard extortion timeline.

Why This Matters for You and Your Family

When a government health department is breached, the information exposed often includes details that identify real people across an entire state. If your family has used public health services in Mato Grosso, received vaccinations, registered births, or had any interaction with SES-MT facilities, your records may now sit on a criminal leak site. Health data combined with government ID numbers creates a high-value package for identity thieves, loan fraud, and targeted scams. Even if you do not live in Brazil, family members who traveled, studied, or worked there could be affected. Once this material surfaces on criminal forums, it rarely disappears without direct intervention.

The Doxxing and Identity-Chain Implications

Credential leaks and internal documents from health systems frequently chain into larger doxxing campaigns. An email address or national ID found in the SES-MT files can be cross-referenced with gaming accounts, social-media handles, and data-broker profiles. Attackers then map these connections to build a complete picture of you and your household. Children’s gaming accounts are especially vulnerable because parents often reuse passwords or recovery emails tied to official government records. A single breach can therefore cascade into account takeovers, swatting attempts, or extortion demands that target minors.

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Report details & sourcing

Attributed to LockBit · 3412 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed June 17, 2026

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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LockBit — 3412 incidents tracked

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