Shamrock Technologies Listed by medusa Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 13, 2025, the ransomware group Medusa listed Shamrock Technologies on its leak site, claiming to have exfiltrated internal files during a ransomware attack. The number of individuals affected remains unknown, and no further details on the volume or contents of the material have been made public. The listing places the incident within a continuing pattern of ransomware operations that combine encryption with data theft and public pressure on targeted organizations.

What happened

Shamrock Technologies was added to Medusa’s leak site on December 13, 2025. The group states that internal files were taken during a ransomware intrusion. No information has been released about the date of the intrusion itself, the methods used to gain access, the quantity of data involved, or whether any ransom demand was issued or met. The organization has not issued a public statement confirming or disputing the listing.

Who is medusa?

Medusa is a ransomware group that has conducted operations against organizations in multiple sectors since at least 2023. Like other groups in this category, it typically employs double-extortion tactics: encrypting systems and also copying data that it threatens to publish if payment is not received. The group maintains a leak site where it lists victims and, in some cases, posts samples of material it claims to have obtained. Its listings are presented by the group as evidence of successful intrusions, though independent verification of each claim is not always available.

Who is Shamrock Technologies?

Shamrock Technologies, founded in 1941 and headquartered in Newark, New Jersey, manufactures micronized polytetrafluoroethylene and related specialty powders, dispersions, emulsions, and compounds. Its products are used in inks, coatings, thermoplastics, greases, elastomers, personal-care items, and other industrial applications. The company employs between 51 and 200 people and operates as a supplier within global manufacturing supply chains.

What data was at risk

The only information released is that internal files were allegedly exfiltrated. No inventory of specific file types, customer records, employee data, or technical documents has been published. Organizations of this size and sector commonly hold supplier contracts, formulation records, customer lists, employee information, and operational documentation; however, the precise contents of the material referenced in the listing remain unconfirmed.

What's at stake

Exposure of internal files can reveal proprietary processes, customer relationships, or employee details that may be misused for competitive or fraudulent purposes. For individuals whose information appears in such records, the primary concerns are potential follow-on scams or identity misuse. For the company, the incident adds to the operational disruption already caused by ransomware and may affect relationships with customers and suppliers who expect confidentiality of shared information.

Were you affected?

Because the number of individuals involved has not been disclosed, anyone who has done business with Shamrock Technologies or worked there should monitor their accounts for unusual activity. Practical first steps include reviewing bank and credit statements, enabling multi-factor authentication on important accounts, and remaining alert to unsolicited messages that reference the company. Readers can also run a free exposure scan of their email address against known breach data sets to check whether their information has appeared in previously published collections.

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