Custom Powder Systems Listed by cactus Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware groups continue to target industrial and manufacturing suppliers, treating operational technology vendors and specialty equipment makers as high-value sources of internal data. In this environment, even mid-sized firms that support regulated production environments can appear on criminal leak sites, raising questions for customers, partners and employees about what may have left the network.

On 11 August 2023, the ransomware group known as cactus listed Custom Powder Systems among its claimed victims. Public reporting states that internal files were exfiltrated in a ransomware attack; the number of people affected remains unknown and further technical detail has not been released.

What happened

According to the available record, Custom Powder Systems was named on the cactus leak site on or around 11 August 2023. The group asserted that it had conducted a ransomware attack and removed internal files from the company’s systems. No confirmed figure for the volume of data, no list of specific file categories beyond the general description “internal files,” and no public statement detailing the initial access method or encryption timeline have been provided in the source material. The number of individuals whose information may be involved is recorded as unknown. As with most leak-site postings, the listing itself constitutes a claim by the threat actor rather than an independently verified disclosure.

The group behind it: cactus

Cactus is a ransomware operation that emerged in the public threat landscape in 2023 and has followed the now-common double-extortion model: encrypting systems while also copying data for later leverage. The group typically gains access through compromised credentials or vulnerable remote services, moves laterally, exfiltrates material, and then deploys ransomware. Victims that do not negotiate are often named on a dedicated leak site, sometimes accompanied by sample files intended to prove the theft. Cactus has previously claimed attacks against organisations in manufacturing, professional services and other sectors; each listing is presented by the group as evidence of a successful intrusion. In the present case, the only specific assertion tied to Custom Powder Systems is the claim that internal files were taken. No additional statements attributed to cactus about this victim appear in the provided facts.

Who is Custom Powder Systems?

Custom Powder Systems describes itself as a containment company that supplies specialised solutions to customers. Firms of this type design and build equipment used to handle powders and other bulk materials under controlled conditions—commonly for pharmaceutical, chemical, food or advanced-materials production. Such organisations typically maintain engineering drawings, process documentation, customer project files, supplier records, employee information and internal business correspondence. Because their products often sit inside regulated manufacturing lines, a breach can affect not only the company itself but also the confidentiality expectations of the clients who rely on those containment systems. The precise scope of Custom Powder Systems’ customer base and data holdings is not detailed in the public incident record.

What was likely exposed

The sole data description given is “internal files exfiltrated in ransomware attack.” No inventory of document types, no confirmation of personal data, financial records or intellectual property, and no statement of whether customer or employee information was included have been released. Organisations that design and supply industrial containment equipment ordinarily store engineering specifications, quality and compliance documents, contracts, correspondence and ordinary business records. It is therefore possible that some combination of those materials was among the files claimed by cactus, yet the exact contents remain unconfirmed. Readers should treat any assumption about specific data elements as speculative until verified by the company or by independent analysis of leaked material.

Why it matters

For individuals whose details may reside in the taken files—employees, contractors or contacts at customer sites—the practical risks include targeted phishing, social-engineering attempts that reference real projects, and potential misuse of any personal or financial information that happened to be present. For Custom Powder Systems the consequences can include operational disruption, contractual notification obligations, reputational harm with clients who entrust it with sensitive process knowledge, and the cost of investigation and remediation. Because the company operates in a sector that supports regulated manufacturing, even limited exposure of technical or project data can create downstream concerns for partners who must assess their own exposure. The absence of a confirmed headcount or data inventory simply means the full scale of those risks cannot yet be measured from public sources.

What to do if you're exposed

If you have a past or present relationship with Custom Powder Systems—as an employee, supplier or customer—monitor account statements and email for unusual activity, and treat unsolicited messages that reference the company or its projects with caution. Change passwords on any related accounts, enable multi-factor authentication where available, and consider placing fraud alerts with credit bureaus if you believe personal financial data could have been involved. Because the precise contents of the exfiltrated files are unconfirmed, a prudent step is to check whether your email address has already appeared in known breach corpora; free exposure-scan tools can perform that limited check without requiring sensitive information beyond the address itself. Remain alert for official updates from the company rather than relying solely on criminal leak-site claims.

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