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high severity August 28, 2024 · 3 min read Unverified claim — what this is

medisetter.com Listed by killsec Ransomware Group

If you are a customer of medisetter.com, here’s what is being claimed, and what it would mean for you.

Medisetter is Vietnam's largest multichannel digital network dedicated to healthcare practitioners (HCPs). The platform emphasizes the quality of its member base over quantity, ensuring that all members are verified healthcare practitioners or medical students.

— from Killsec’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.
medisetter.com Listed by killsec Ransomware Group

On August 28, 2024, Vietnamese healthcare platform Medisetter.com appeared on the leak site of the ransomware group Killsec. The listing states that internal files were exfiltrated during a ransomware attack on the company, which operates Vietnam’s largest verified network of healthcare practitioners and medical students. The exact number of individuals whose information is contained in the stolen files remains unknown, as neither the leak-site posting nor any subsequent company notification has quantified affected records.

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Details from the Leak-Site Listing

The Killsec ransomware leak site, accessible via the .onion address indexed by ransomware.live, claims successful data exfiltration from Medisetter’s systems. The disclosure indicates that internal files were taken but does not specify the precise data types or volume. Public mirrors of the listing state the post date as August 28, 2024, and show that the group has not yet published any sample files or set an explicit public deadline for ransom payment in the visible entry. The platform itself focuses on verified healthcare practitioners, meaning any exposed internal files could contain professional credentials, workplace details, or contact information tied to licensed medical personnel and students.

Why This Matters for You and Your Family

When a healthcare network like Medisetter is breached, the ripple effects reach beyond the company. If you or a family member is a doctor, nurse, medical student, or even a patient whose records touch this network, your personal or professional details may now sit in an attacker’s archive. Internal files exfiltrated in ransomware incidents frequently include spreadsheets of contacts, licensing documents, email correspondence, and operational databases. Even without a confirmed record count, the exposure creates immediate risks of phishing campaigns tailored to healthcare workers and potential identity misuse that can affect household finances and reputations for years.

The Doxxing and Identity-Chain Risks

Ransomware leaks rarely stop at one dataset. A single exposed email or phone number from Medisetter’s internal files can be cross-referenced with other breaches to build a complete identity chain. This process links professional accounts to personal social media, family addresses, and children’s online profiles. Credential leaks of this nature frequently cascade into account takeovers, especially for gaming accounts belonging to your children that reuse the same passwords or recovery emails. Once attackers map these connections, targeted doxxing, harassment, or financial fraud becomes significantly easier. The healthcare focus heightens the stakes, as licensed practitioners’ details can be abused to impersonate medical professionals or launch spear-phishing attacks against clinics and hospitals.

Killsec’s Known Track Record

Public reporting attributes Killsec with emerging in early 2024 as a relatively new ransomware and extortion operation. The group typically gains initial access through phishing or exploitation of unpatched web applications, exfiltrates sensitive internal files before deploying encryption, and then leverages dual extortion: threatening both data publication and operational disruption. Notable prior victims listed on their leak site have included smaller healthcare providers and educational organizations, though comprehensive independent tallies remain limited. Their playbook emphasizes rapid publication on dark-web leak sites when ransom demands go unmet, often accompanied by screenshots or partial file samples intended to pressure victims into payment. The exact name “Killsec” should be monitored through established ransomware trackers, as rebranding or splinter groups are common in this ecosystem.

What to do

  • Run a DoxxScan to map every link between your professional emails, phone numbers, healthcare licenses, and real-world identity, using cleanup handled by specialists.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure of your data is caught and acted upon in hours rather than months.
  • Rotate any password you used on Medisetter.com or related healthcare portals wherever it has been reused, and switch to 2FA via an authenticator app instead of SMS.
  • Cover your entire household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often chain back to the same breached emails or addresses.
  • Let remediation specialists manage takedown requests for any exposed personal documents or contact details that surface on data-broker or paste sites in the coming weeks.

The Medisetter breach underscores how quickly a single ransomware listing can expose professional networks that touch your family’s health and livelihood. Staying ahead requires more than reactive password changes. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage including children’s gaming accounts that frequently become vectors for further compromise. Source: Killsec leak site via ransomware.live

What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo
value redacted in this samplephone, household, property recordsBeenVerified
value redacted in this sample582 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach
unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

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Report details & sourcing

Severity High
Disclosed August 28, 2024
Last reviewed August 8, 2026
Affected Unconfirmed
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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