eriematerials.com Listed by lockbit3 Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

When a company that supplies building materials to contractors and architects appears on a ransomware group's leak site, the practical concern is straightforward: internal files may have left the organisation's control, and people connected to that business — employees, partners, or customers — cannot yet know whether their information is among what was taken. Public detail on this incident is limited, but the listing itself is enough to warrant attention from anyone who has dealt with Erie Materials.

On 13 June 2023, the ransomware group known as lockbit3 listed eriematerials.com, claiming it had exfiltrated internal files in a ransomware attack. The number of people affected remains unknown, and the precise contents of those files have not been publicly itemised. What follows is what is known, what can reasonably be inferred from the nature of the business, and what steps affected individuals can take.

What happened

According to the reported listing, eriematerials.com was named by lockbit3 on 13 June 2023. The group claimed that internal files had been exfiltrated as part of a ransomware attack. No public figure has been given for the volume of data, the number of individuals whose information may be involved, or the exact date the intrusion began. The method of initial access has not been disclosed in the available record. As with many ransomware listings, the appearance of a victim name on a leak site constitutes a claim by the group rather than an independently verified confirmation of every detail.

Public reporting on the incident does not describe whether a ransom was demanded, paid, or refused, nor whether any files were subsequently published. The core facts that can be stated are the organisation named, the date the listing was reported, the attribution to lockbit3, and the characterisation of the material as internal files taken in a ransomware attack.

The group behind it: lockbit3

Lockbit3 is a well-documented ransomware operation that has operated for years under a ransomware-as-a-service model. Affiliates gain access to victim networks, deploy the group's encryptor, and exfiltrate data before encryption in many cases. The group then pressures victims by threatening to publish stolen material on a dedicated leak site if payment is not made. Lockbit variants have been linked to attacks across manufacturing, professional services, healthcare, and other sectors worldwide. The group has historically used double-extortion tactics: encryption paired with the threat of data exposure.

In this instance, lockbit3's listing of eriematerials.com should be read as the group's claim that it conducted the attack and removed internal files. No further specific statements by the group about this victim — such as sample file listings, ransom amounts, or deadlines — are included in the facts available for this report. Attribution rests on the leak-site claim unless and until additional independent confirmation emerges.

eriematerials.com and its sector

Erie Materials, established in 1973, distributes building materials for residential and commercial exteriors. Its product lines include roofing, siding, windows, doors, decking, manufactured stone veneer, and gutters. The company serves professional contractors and architects rather than the general retail public. Organisations of this type typically maintain records related to orders, pricing, project specifications, supplier relationships, employee information, and commercial correspondence.

A breach affecting a distributor in the building-materials sector is consequential because such firms sit at the intersection of construction supply chains. Compromised internal files can affect not only the company itself but also the contractors, architects, and project timelines that depend on reliable supply and confidential commercial terms. Even when customer data is not the primary target, operational and relationship data can create secondary risks for the wider network of businesses that work with the distributor.

What was likely exposed

The available facts state that internal files were exfiltrated in a ransomware attack. No further breakdown of data types — such as employee records, customer lists, financial documents, or technical drawings — has been publicly disclosed. The number of people affected is unknown.

Organisations that distribute building materials commonly hold employee personal and payroll data, contractor and architect contact details, order and invoice histories, pricing agreements, and internal operational documents. It is reasonable to expect that some combination of these categories could be present in internal file stores, but it is not confirmed that any specific category was taken in this incident. Exact contents remain unconfirmed.

The real-world impact

For individuals whose information may have been among the internal files, the practical risks include potential misuse of contact details, employment-related data, or commercial identifiers if those appear in the stolen material. Phishing and social-engineering attempts that reference real business relationships are a common follow-on risk after ransomware exfiltration. For the organisation, the impact can include operational disruption, the cost of investigation and recovery, and strain on relationships with contractors and architects who rely on the firm for materials and project support.

Because the scale and precise contents are undisclosed, it is not possible to quantify how many people face elevated risk or which specific harms are most likely. The absence of confirmed publication of the files does not eliminate the possibility that copies remain under the control of the attackers or others. Calm monitoring of accounts and communications remains warranted for anyone with a past or present connection to the company.

If your data was in this claimed breach

If you have worked with, for, or through Erie Materials, treat the possibility of exposure seriously even though public detail is limited. Practical first steps include:

• Monitor financial and email accounts for unexpected activity or messages that reference the company or recent projects.
• Be cautious of unsolicited calls or emails that claim to relate to orders, invoices, or account updates; verify through known channels before responding.
• Change passwords on any accounts that may have shared credentials or recovery information tied to work email, and enable multi-factor authentication where available.
• Request a credit or fraud alert if you have reason to believe sensitive personal identifiers were held by the organisation.
• Run a free exposure scan of your email address to check whether it has already appeared in known breach datasets elsewhere.

These steps do not depend on confirmation of every detail of this incident. They reduce the chance that any exposed information, if it exists, can be used against you. Further official notices from the organisation, if issued, should be read carefully for any additional guidance specific to this event.

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