CSG Consultants data breach

What we know

CSG Consultants operates as a prominent professional services and technical consulting firm, frequently partnering with public sector agencies, private enterprises, and infrastructure developers to manage complex project lifecycles, engineering assessments, and municipal compliance. Because of the nature of their engagements, CSG Consultants routinely serves as a central repository for extensive volumes of sensitive operational data. This encompasses detailed personnel files, background screening records, subcontractor payroll information, professional certifications, and proprietary financial documents. To execute large-scale consulting and project management tasks, the firm must collect and retain comprehensive personal and professional data from employees, contractors, and client representatives alike, creating a high-value target for malicious cyber actors seeking to exploit institutional vulnerabilities.

In 2025, CSG Consultants reported a significant cybersecurity incident to the Maryland Attorney General's Office, alerting affected individuals to an unauthorized intrusion into their network environment. While exact technical forensics often evolve, breaches affecting professional consulting and contractor firms typically involve sophisticated ransomware deployments, credential harvesting attacks, or unauthorized access to centralized cloud repositories and legacy databases. In many instances, threat actors leverage compromised administrative credentials or exploit unpatched vulnerabilities in remote access infrastructure to bypass perimeter defenses, allowing them to quietly infiltrate internal systems and exfiltrate vast troves of confidential corporate and personal data before detection occurs.

The data compromised in the CSG Consultants security incident includes deeply sensitive personally identifiable information, such as full names, dates of birth, Social Security numbers, banking and direct deposit details, and government-issued identification numbers. The exposure of this specific data matrix creates severe, immediate risks for victims. Social Security numbers and dates of birth form the foundational elements required for synthetic identity fraud, allowing bad actors to open fraudulent credit lines, secure unauthorized loans, or intercept government tax refunds in the victim's name. Furthermore, compromised financial and banking details open the door to direct account takeover, unauthorized wire transfers, and systemic financial disruption that can take years to fully resolve.

As an entity entrusted with sensitive personal information, CSG Consultants had strict legal and regulatory obligations under state data protection statutes, common law negligence principles, and federal guidelines to safeguard this data against unauthorized disclosure. Organizations that collect and store private information are legally required to implement robust administrative, technical, and physical safeguards—including multi-factor authentication, network segmentation, rigorous third-party vendor assessments, and continuous intrusion monitoring. The occurrence of a data breach of this magnitude strongly suggests a failure in these foundational security duties, indicating that the firm may have fallen short of reasonable industry standards in maintaining adequate defensive controls.

For individuals who have received an official data breach notification letter from CSG Consultants, this document serves as formal legal acknowledgment that your private information was compromised due to corporate negligence. Under modern class action jurisprudence, receipt of this letter establishes the legal standing necessary to participate in litigation and pursue financial compensation for the risks and harms inflicted, without requiring proof of immediate out-of-pocket financial loss. Our law firm is actively investigating potential class action claims on behalf of all impacted Maryland residents. We handle these cases on a strict contingency fee basis, meaning you pay absolutely nothing out of pocket, and we only collect a fee if we successfully recover compensation on your behalf.

See every breach reported in Maryland or read what to do after a ransomware attack.