American Heart of Poland Inc Listed by avaddon Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
The American Heart of Poland Inc Listed by avaddon Ransomware Group (reported September 9, 2021) is an unverified claim; the data involved is undisclosed belonging to roughly unknown people. If you have an account with them, your information may now be circulating on the open web and with data brokers. Here’s exactly what happened, how to check if you were affected, and what to do next.
Ransomware operations that combine encryption with data theft have become a persistent feature of the threat landscape, particularly against organisations holding sensitive records. On 9 September 2021, American Heart of Poland Inc was listed on the leak site maintained by the Avaddon ransomware group, which stated that internal files had been removed from the organisation.
The number of individuals affected is not known, and no further technical details about the intrusion or the volume of data have been made public. The listing itself constitutes the group’s claim of possession; independent confirmation of the data’s contents or subsequent use has not been reported.
What happened
American Heart of Poland Inc appeared on the Avaddon ransomware group’s data-leak site on 9 September 2021. The group asserted that it had exfiltrated internal files during a ransomware operation. No information has been released about the date of the intrusion, the method of initial access, the quantity of material taken, or whether any of the data was later published or sold.
The group behind it: avaddon
Avaddon is a ransomware operation that emerged in 2020 and employed a double-extortion model: encrypting systems while also copying data and threatening its release. The group maintained a leak site on which it listed victims that had not paid ransom demands. Public reporting has documented Avaddon’s activity against entities in multiple countries and sectors before the group’s infrastructure was disrupted in 2021.
In this instance the group listed American Heart of Poland Inc and claimed possession of internal files. No additional statements or samples from the claimed data set have been attributed to Avaddon in connection with this listing.
Who is American Heart of Poland Inc?
American Heart of Poland Inc operates in the healthcare sector, providing cardiology-related services. Organisations of this type routinely maintain electronic health records, diagnostic imaging, laboratory results, appointment schedules, and administrative correspondence containing both patient and employee information.
Healthcare providers are frequent targets for ransomware because disruption of clinical systems can affect patient care and because the records they hold retain long-term value for identity-related fraud or other misuse.
What was likely exposed
The only detail released is that internal files were claimed to have been exfiltrated. Specific categories of data—such as patient identifiers, medical histories, financial records, or employee information—have not been disclosed. Consequently, the precise contents of any exfiltrated material remain unconfirmed.
Entities in this sector commonly store protected health information and personally identifiable information; however, whether any such records were among the files referenced in the listing cannot be established from available information.
Why it matters
Even without confirmed publication of records, the presence of an organisation’s name on a ransomware leak site indicates that data may have left its control. Individuals whose information is held by the organisation could face risks of identity misuse or unwanted disclosure of medical details. The organisation itself may incur costs related to investigation, notification, regulatory compliance, and restoration of systems.
Because the scale and nature of the data remain undisclosed, the full extent of potential impact cannot yet be assessed.
What to do if you're exposed
Individuals who believe their information may be involved should monitor their credit reports and financial accounts for unusual activity. They can also place fraud alerts or credit freezes with major bureaus and consider enrolling in any notification or support services offered by the organisation.
Readers may run a free exposure scan of their email address against known breach data to determine whether their information has appeared in previously reported incidents.
AICompiled with AI assistance from public sources and published under our editorial standards.
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Publicly posted by avaddon — 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.