Alan Shintani, Inc targeted by Anubis ransomware group

• Ransomware group: Anubis
• Country: United States
• Sector: Professional Services
• Announcement date: September 19, 2025

Anubis ransomware group claims data breach at Alan Shintani, Inc

The Anubis ransomware group has announced a significant data breach involving Alan Shintani, Inc. According to a post on the group's leak site, the threat actors claim to have exfiltrated a massive volume of data, totaling over 700 GB. This announcement, made on September 19, 2025, suggests a targeted operation aimed at the professional services firm.

In the context of modern cyber threats, ransomware groups often utilize leak sites to pressure victims. These sites serve as a public platform where attackers post evidence of stolen data to increase the pressure on an organization to pay a ransom. This tactic is frequently associated with double-extortion schemes, where the attackers not only encrypt the victim's systems but also threaten to release sensitive information to the public or to specific stakeholders if their demands are not met.

Details of the alleged intrusion

The Anubis group claims to have successfully gained unauthorized access to the internal systems of Alan Shintani, Inc. Following this access, the group alleges that they were able to exfiltrate a vast amount of the company's proprietary and sensitive information. The group's announcement specifically highlights that the stolen data contains critical documentation related to the various construction and management projects handled by the firm.

According to the claims made by the attackers, the leaked information includes highly sensitive materials such as photographs and blueprints that are essential to the company's operations. Most notably, the group alleges that the breach includes structural plans for government facilities, which introduces a high level of sensitivity to the incident. The group's post indicates that the stolen data is not limited to corporate files but extends into highly confidential project details and private client information.

Alleged contents of the data leak

The information allegedly stolen by the Anubis group is diverse, covering various aspects of the company's business and client interactions. The leaked data is reported to include:

• Customer financial information
• Residential floor plans
• Government facility structural plans
• Construction project photographs

The presence of such varied data types suggests that the attackers may have had broad access to different segments of the organization's network, ranging from administrative and financial databases to project management and design repositories.

About Alan Shintani, Inc

Alan Shintani, Inc. is a professional services firm based in the United States, specifically operating out of Wisconsin. The company functions as a general contracting and construction management firm. They specialize in providing comprehensive design-build services, catering to a wide range of sectors including commercial, industrial, and institutional projects.

Impact and security implications

The nature of the data allegedly stolen carries significant risks for various stakeholders. For the clients of Alan Shintani, Inc., the exposure of financial information and residential floor plans could lead to an increased risk of identity theft and highly targeted phishing campaigns. Furthermore, the alleged presence of structural plans for government facilities is particularly concerning, as it could raise serious questions regarding national security and may prompt investigations by relevant government authorities.

Because the company is based in the United States, this incident may trigger specific legal obligations. Depending on the nature of the data and the jurisdictions involved, the firm may face mandatory data breach notification requirements under various state laws and federal regulations. The complexity of these regulations highlights the necessity for organizations to have robust incident response and legal compliance frameworks in place.

In terms of defensive posture, organizations in the professional services and construction sectors can benefit from implementing several security best practices to mitigate such risks. These include enforcing multi-factor authentication (MFA) across all remote access points, maintaining strict network segmentation to prevent lateral movement by attackers, and conducting regular audits of access permissions to sensitive project files. Additionally, continuous monitoring of network traffic and implementing comprehensive data loss prevention (DLP) tools can help detect and prevent unauthorized exfiltration of sensitive blueprints and financial records.