premi##### Listed by clop Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 24, 2024, the ransomware group known as clop listed premi##### on its leak site, claiming to have exfiltrated internal files in a ransomware attack. Public reporting identifies the presumed victim as Premier Inc. The number of people affected remains unknown, and further specifics about the scale or exact timing of the intrusion have not been disclosed. The listing itself constitutes a claim by the group rather than independent confirmation of the full extent of any compromise.

This matters because organisations of this type typically manage sensitive operational and partner data. When a ransomware actor asserts possession of internal files and advertises outreach to the company, the practical risk is that proprietary or personal information could be published or misused if negotiations fail.

Inside the incident

According to the available record, clop announced that it held data belonging to premi##### and referenced a broader set of companies that use Cleo software. The group stated that its teams were reaching out and calling the company to provide a special secret chat. The only data category named is internal files said to have been exfiltrated during a ransomware attack. No confirmed count of affected individuals, no inventory of specific file types beyond that description, and no verified timeline of the intrusion have been made public. The listing is therefore treated as an unverified claim pending further disclosure by the organisation or independent verification.

Inside clop

Clop is a well-documented ransomware operation that has operated for years under a double-extortion model: encrypting systems while also stealing data and threatening to publish it on a dedicated leak site if payment is not made. The group has repeatedly targeted file-transfer and managed-file-transfer platforms used by large enterprises, most notably through high-profile campaigns against MOVEit and, more recently, Cleo software. Its typical pattern involves exploiting known or zero-day vulnerabilities in widely deployed business applications, exfiltrating large volumes of data, and then posting victim names on its site while contacting the organisations directly. Public reporting has linked clop to numerous incidents across healthcare, finance, and manufacturing sectors. In the present case the group claims to possess data from companies that use Cleo and asserts that it is actively contacting premi#####; those statements remain claims rather than independently What's Publicly Reported about this specific victim.

Who is premi#####?

Public reporting identifies the organisation as Premier Inc., a U.S.-based healthcare performance-improvement and group-purchasing company that works with hospitals, health systems, and suppliers. Entities of this kind typically hold contracts, pricing data, operational records, and information about member organisations and their staff. Because they sit at the intersection of clinical supply chains and administrative systems, a compromise can affect not only the company itself but also the hospitals and vendors that rely on its services. The consequential nature of any breach therefore stems from the volume and sensitivity of the business and partner data such an organisation ordinarily processes.

The information in question

The facts state only that internal files were exfiltrated in a ransomware attack. No further breakdown of file categories, employee records, patient-related data, or financial documents has been disclosed. Organisations in the healthcare group-purchasing sector commonly maintain contracts, supplier catalogues, member hospital details, employee directories, and internal communications. Whether any of those categories were among the files claimed by clop remains unconfirmed. Readers should therefore treat the precise contents as unknown until the organisation or regulators provide additional detail.

Why it matters

For individuals whose information may have been present in internal files, the concrete risks include potential exposure of contact details, employment information, or other personal data that could be used for phishing or identity-related fraud. For the organisation, the risks include operational disruption, contractual obligations to notify partners, and reputational damage if the claimed data is published. Because the number of affected people is unknown and the exact data types are limited to the description “internal files,” the full scope of harm cannot yet be quantified. The incident also illustrates the continuing threat posed by ransomware groups that exploit widely used file-transfer software, placing pressure on any company that relies on such tools to maintain strong patching and monitoring practices.

Were you affected?

If you have a professional or personal relationship with premi##### or its member organisations, monitor official statements from the company for any notification or guidance. Change passwords on related accounts, enable multi-factor authentication where available, and remain alert for unexpected emails or calls that reference the incident. As a practical first step, you can run a free exposure scan of your email address to check whether it has already appeared in known breach data sets. That scan will not confirm involvement in this specific incident, but it can surface earlier exposures that may require attention.

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