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Recent Breaches › Ubon Ratchathani University Listed by blacklock Ransomware Group

HIGH severityUnverified claimHow we verify

Ubon Ratchathani University Listed by blacklock Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

RBRecent Breaches Breach Intelligence·June 26, 2025
Ubon Ratchathani University Listed by blacklock Ransomware Group

Reported June 26, 2025.

HIGH
Severity
June 26, 2025
Disclosed
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Ubon Ratchathani University was listed by the blacklock ransomware group on June 26, 2025, with internal files reported to have been exfiltrated. Individuals connected to the university should check whether their information may have been exposed and take appropriate protective steps.

Severity & verification
HIGH severityUnverified claim
Data types not itemised.
Published on a ransomware group’s leak site — an unverified extortion claim until the named organization or credible reporting corroborates it.
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People connected to Ubon Ratchathani University—students, staff, alumni, and partners—now face the practical question of whether their personal or institutional information has been taken and could be misused. On 26 June 2025 the university was listed by the ransomware group blacklock, which claims to have exfiltrated internal files. The number of people affected remains unknown, and public detail on exactly what was taken is limited, yet the listing alone is enough to warrant careful attention from anyone whose data the university may hold.

Ransomware incidents of this kind typically leave individuals with lingering uncertainty about identity theft, phishing, or unsolicited contact. Until more is confirmed, the safest course is to treat the claim seriously and take basic protective steps.

What happened

According to the available record, Ubon Ratchathani University was listed by the blacklock ransomware group on 26 June 2025. The group claims that internal files were exfiltrated in a ransomware attack. No further public confirmation of the intrusion method, the precise date of compromise, or the volume of data has been released. The number of people affected is listed as unknown. The incident is described only as involving the exfiltration of internal files; no additional technical indicators or ransom demands have been disclosed in the facts provided.

Inside blacklock

Blacklock is a ransomware operation that follows the now-common double-extortion model: operators encrypt systems and simultaneously copy data, then threaten to publish the stolen material if a ransom is not paid. Groups of this type maintain dedicated leak sites where they post victim names and, in some cases, sample files to pressure organisations. Public reporting on blacklock has described it as opportunistic, targeting a range of sectors rather than specialising in higher education alone. Listings on such sites are claims made by the group itself; they are not independent verification that a breach occurred or that every asserted file is genuine. In this instance the facts record only that blacklock listed Ubon Ratchathani University and asserted the exfiltration of internal files. No specific statements by the group about the university beyond that listing are available in the record.

Ubon Ratchathani University and its sector

Ubon Ratchathani University (UBU) is a public higher-education institution in Thailand. It began as a campus of Khon Kaen University in 1987 and received independent university status in 1990. Public figures associated with the organisation list approximately 502 employees and annual revenue of roughly $38.7 million. Like other colleges and universities, it sits at the intersection of academic administration, research, student services and regional community engagement.

Higher-education institutions routinely manage large volumes of personal and operational data: student records, staff personnel files, research materials, financial accounts and correspondence with external partners. A breach at such an organisation can therefore affect not only current students and employees but also alumni, applicants and collaborating bodies. Because universities often serve as trusted repositories of long-term personal information, any confirmed compromise carries consequences that extend well beyond the immediate campus.

What data was at risk

The facts state that internal files were exfiltrated in a ransomware attack. No more granular inventory—such as specific categories of personal data, financial records or research files—has been disclosed. Organisations of this type typically hold student enrolment and academic records, employee payroll and identity documents, research data, email archives and administrative databases. Whether any of those categories were among the files claimed by blacklock remains unconfirmed. Public detail is limited to the broad description “internal files,” so exact contents cannot be stated as fact.

Why it matters

For individuals, the principal risks are identity misuse, targeted phishing and the possible exposure of sensitive personal or academic information. Even when the precise data set is unknown, the mere possibility that names, contact details, identification numbers or academic histories have left institutional control can lead to long-term monitoring burdens. For the university itself, a ransomware incident can disrupt teaching and research, damage trust with students and funders, and trigger regulatory or contractual obligations under Thai data-protection rules. Because the number of people affected is unknown, the scale of any individual harm cannot yet be measured; the uncertainty itself is a cost that both the institution and its community must manage.

What to do if you're exposed

If you have any past or present connection to Ubon Ratchathani University, treat the blacklock listing as a prompt for basic hygiene rather than panic. Practical first steps include:

These measures do not require confirmation that your specific records were taken; they simply reduce the chance that any exposed information can be used against you. Official updates from the university, if and when they appear, should be followed in preference to unverified claims circulating online.

AICompiled with AI assistance from public sources and published under our editorial standards.

Editorial & sourcing policy
Recent Breaches is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data, and we do not hold the data claimed in leak-site listings. Incidents are compiled from publicly accessible sources and threat-intelligence platforms and are reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — write to support@galaxywarden.com or press@recentbreaches.com.
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How this breach connects

Company

Attributed to

Method

CompanyUbon Ratchathani University security record
87/100
DoxxScan™ · Low doxx risk
B 80Good record

1 reported incident on record.

See Ubon Ratchathani University’s full breach history →

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Source: threat-actor leak-site listing

Publicly posted by blacklock — unverified claim, pending independent verification

Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.

Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.

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