JMS Building Corporation Data Breach

INC Ransom listed JMS Building Corporation as a victim on September 10, 2026. The threat intelligence was gathered by SOCRadar’s Dark Web Monitoring service. JMS Building Corporation operates in the United States, providing building and structural construction services. This sector and geographic location aligns with INC Ransom’s recent targeting patterns. Over the past 60 days, INC Ransom has claimed 65 victims, with a notable concentration in the Manufacturing, Professional Services, and Healthcare industries. The primary geographic targets have been the United States, Canada, and Malaysia. Recent victims within the manufacturing sector include Specialty Textile Services, RENO Refractories Inc., Universal Plastics Inc., and TRULITE GLASS & ALUMINUM SOLUTIONS, all of which were listed within the same 60-day period. JMS Building Corporation’s profile closely matches the typical targeting of INC Ransom.

SOCRadar’s query of the domain jmsbuilding[.]com via its stealer-log dataset returned no direct records. However, it is important to note that this dataset is paginated and has specific bounding parameters. Therefore, the absence of records in this particular query does not definitively confirm that the organization is unaffected by credential compromise. Credentials could potentially exist under alternate corporate domain aliases or within data feeds that were not included in this specific sampling. The methodology employed by INC Ransom often involves the exploitation of infostealer-harvested credentials as an initial access vector. Threat actors or their associates frequently validate these compromised credentials against accessible corporate accounts, such as Microsoft 365, VPNs, or other remote-access portals. This validation process helps identify viable entry points before the deployment of ransomware. Consequently, the possibility of such an attack scenario cannot be excluded solely based on the results of this specific stealer-log query. Given the nature of the INC Ransom group’s operations and the potential for credential compromise to lead to ransomware deployment, continued dark web monitoring and proactive security measures are recommended. This includes regular credential hygiene checks, prompt password rotation, and a thorough review of multi-factor authentication configurations across all critical access points. Monitoring for activity on alternate corporate domains and scrutinizing logs for Microsoft 365, VPN, and remote-access platforms are also advised to detect any potential intrusion attempts.

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.