Mayco International Data Breach

Mayco International, a manufacturing company based in the United States, has been listed as a victim on the Dark Project ransomware group’s dark web portal, with the listing published on August 5, 2026. This incident was identified through SOCRadar’s Dark Web Monitoring service. The company operates within the manufacturing sector, supplying essential components for industrial and automotive supply chains. It has now joined a significant cluster of victims attributed to Dark Project, reflecting the group’s consistent targeting patterns. In the 60 days preceding this listing, Dark Project claimed 17 other victims via its leak portal. The group exhibits a strong preference for targeting the manufacturing, healthcare, and transportation sectors. Geographically, its victims are predominantly located in the United States, the United Kingdom, and the Philippines. Other recent Dark Project victims that share similarities with Mayco International, such as US manufacturing organizations, include Rocky Mount Recyclers, Leviton, Genesis Engineering Group, and Sutherland Packaging. Mayco International’s profile aligns precisely with the group’s dominant sector and geographic focus, positioning it as a representative case rather than an outlier in their recent activity.

An analysis of SOCRadar’s stealer-log telemetry revealed no direct records associated with the domain maycointernational.com within the queried dataset. It is important to note that a null result does not definitively confirm that the organization is unaffected by credential compromise. The query encompassed a paginated sample and may not represent the complete set of available data. Furthermore, the lookup did not extend to alternate or subsidiary domains that the company might operate. Credentials harvested using personal email aliases, rather than corporate ones, would also not surface against the corporate domain in this type of query, posing a particular risk for manufacturers with multiple plant-level or regional domains. For ransomware operations, the harvesting of infostealer credentials represents a well-documented initial access vector. Threat actors or initial access brokers commonly source fresh credential logs from underground marketplaces, validate their authenticity for corporate access, and subsequently utilize them to infiltrate systems such as Microsoft 365, VPNs, or remote-access portals. The absence of evidence in this specific query does not preclude this possibility. The credentials may have appeared in data feeds not included in this dataset, been used and rotated prior to indexing, or been harvested under non-corporate email aliases. Therefore, CTI teams should prioritize ongoing monitoring and proactive credential hygiene checks over interpreting a null query result as an indication of no compromise.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.