Was Yozgat City Hospital hit by ransomware?

Yozgat City Hospital was listed by the bert ransomware operation (Turkey), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the bert ransomware group?

bert is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Yozgat City Hospital breach?

bert published data attributed to Yozgat City Hospital. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Yozgat City Hospital

Claimed by Bert · listed 1 year ago

15m

Age

since listed · data leaked

Status timeline

ListedApr 9, 2025
Data leakeddate unknown

At a glance

Group: Bert
Status: Data leaked
Country: Turkey
Sector: Healthcare
Listed on leak site: Apr 9, 2025

About the victim

AI dossier — public-source company profile

Yozgat City Hospital is a modern hospital located in Yozgat, Turkey, providing quality care and medical services. Limited public information is available about the institution's scale or founding details.

Industry: Healthcare - Hospital Services
Address: Yozgat, Turkey

Attack summary

Severity: critical — Confirmed data exfiltration from a healthcare provider involving patient data, which constitutes regulated personally identifiable and health information at scale. Healthcare data breaches are classified as critical due to sensitivity and regulatory obligations.

The threat actor claims to have exfiltrated patient data from the hospital. The group has published data as proof of the breach.

critical

Data the group says was taken

AI dossier — extracted from the leak post

patient data
personal health information

What the group claims

Modern hospital in Yozgat offering quality care and innovation. Patient health is protected — their data, however, is shared globally.

Sources

Leak posthttp://bertblogsoqmm4ow7nqyh5ik7etsmefdbf25stauecytvwy7tkgizhad.onion/post/CCF89B4CDE0A489DB22B294925477C8A

Source

Indexed 1 year ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About bert

The "bert" ransomware group is a recently emerged threat actor first observed in April 2025, appearing to be financially motivated based on their ransomware operations targeting multiple sectors across several countries. Given the limited public documentation and recent emergence, the group's origin and affiliations remain unclear, though their targeting pattern suggests either independent operations or a small-scale ransomware-as-a-service model. With only seven documented victims to date, specific details about their attack methodology, initial access vectors, and encryption techniques have not been extensively documented by major security firms or law enforcement agencies. The group has demonstrated a diverse targeting approach, focusing primarily on organizations in the United States, Malaysia, Taiwan, the United Kingdom, and Turkey, with victims spanning technology, business services, healthcare, and transportation/logistics sectors. No major high-profile campaigns or significant law enforcement actions have been publicly reported against this group, likely due to their recent emergence and relatively small scale of operations. The group appears to remain active as of their recent first observation, though their limited victim count and lack of extensive public documentation suggest they are either a nascent operation or a low-profile threat actor that has not yet attracted significant attention from major cybersecurity researchers or government agencies. The group has been linked to 7 public disclosures across our corpus. First observed on a leak site on April 6, 2025; most recent post June 10, 2025. The operation is currently inactive.

Timeline of this disclosure

April 9, 2025Yozgat City Hospital listed by berton the group's public leak site

Other recent disclosures by bert

bert has been linked to 7 public victims on Darkfield. A sample of the most recent:

See the full bert dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,600 disclosures indexed across all operators we track. Geographically, Yozgat City Hospital is reported in Turkey, a country with 77 ransomware disclosures in our corpus.

If your organisation is affected

A listing by bert means Yozgat City Hospital appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Monitor for the data appearing on bert's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.