Clarkson Insurance Group Listed by medusa Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On November 20, 2024, Clarkson Insurance Group was listed by the medusa ransomware group, which claims the firm was hit by a ransomware attack that involved the exfiltration of internal files totaling 115.9 GB. Public detail remains limited: the number of people affected is unknown, and independent confirmation of the full scope has not been widely reported.

The listing matters because Clarkson Insurance Group acts as an insurance broker for businesses, families, and private individuals. Any compromise of its systems could expose sensitive operational or client-related material, even when exact contents stay unconfirmed.

Inside the incident

According to the reported summary, Clarkson Insurance Group was named on the medusa leak site in connection with a ransomware attack. The group claims internal files were exfiltrated, with the total volume of data leakage stated as 115.9 GB. The date associated with the public listing is November 20, 2024.

No further operational details have been disclosed in the available record. The precise method of initial access, the timeline of encryption or data theft, whether systems were encrypted, and any ransom demand remain undisclosed. The number of individuals whose information may be involved is listed as unknown. At this stage the incident is known primarily through the threat actor’s claim rather than through a detailed public statement from the organisation or independent forensic reporting.

The group behind it: medusa

Medusa is a ransomware operation that has been active for several years and is documented in public cybersecurity reporting as using a double-extortion model. In typical campaigns the group gains access to a network, steals data, and then encrypts systems while threatening to publish the stolen material if payment is not made. Listings on its leak site serve as pressure tactics and as claims of successful intrusion.

Public knowledge of medusa indicates it has targeted organisations across multiple sectors, often publishing sample files or full archives when negotiations fail. The group’s claims about any specific victim, including Clarkson Insurance Group, should be treated as unverified assertions until corroborated by the organisation or by independent investigators. No additional statements attributed to medusa about this particular incident appear in the available facts beyond the listing itself and the stated data volume.

Who is Clarkson Insurance Group?

Clarkson Insurance Group is described as an insurance broker serving businesses, families, and private individuals. Its corporate office is located at 401 W Main St Ste 1500, Louisville, Kentucky, 40202, United States, and the firm is reported to have 27 employees. As a broker, it sits between clients and insurers, handling policy placement, renewals, claims support, and related administrative work.

Organisations of this type routinely process personal identifiers, contact details, financial and payment information, policy documents, and sometimes health or property details needed for underwriting. A breach affecting such a firm is consequential because the data it holds is often sensitive and long-lived; clients may not immediately know whether their records were among any material taken. The relatively small headcount does not reduce the potential impact if client files or internal systems were involved.

The information in question

The available facts state that internal files were exfiltrated in a ransomware attack and that the total amount of data leakage claimed is 115.9 GB. No more granular inventory of file types, databases, or specific data categories has been publicly detailed in the record. Exact contents therefore remain unconfirmed.

Insurance brokers typically maintain records that can include names, addresses, dates of birth, Social Security or tax identifiers, policy numbers, coverage details, claims histories, bank or payment information, and correspondence with clients and carriers. Whether any of those categories were present in the 115.9 GB claimed by medusa is not established by the current facts. Readers should treat the exposure as involving internal corporate material of undetermined composition until further disclosure occurs.

Why it matters

For individuals and businesses that have worked with Clarkson Insurance Group, the primary risk is that personal or commercial information could be misused for identity theft, targeted phishing, or fraud if it was among the exfiltrated files. Even when the precise data types are unknown, the volume claimed and the nature of the business make it prudent to assume that contact and policy-related details might be at risk.

For the organisation itself, a ransomware incident can disrupt operations, damage client trust, and trigger regulatory or contractual notification duties. The listing by a known ransomware group also creates ongoing reputational pressure. Because the number of people affected is unknown and the exact contents unconfirmed, both the firm and any potentially impacted parties face uncertainty that can only be reduced by further official information or independent verification.

If your data was in this claimed breach

If you are a client, employee, or partner of Clarkson Insurance Group, treat the situation as a possible exposure of internal material until more is known. Practical first steps include:

• Monitor financial accounts and credit reports for unexpected activity and consider placing a fraud alert or credit freeze with the major bureaus.
• Be alert for phishing or social-engineering attempts that reference insurance policies, claims, or personal details that could have come from broker records.
• Change passwords on any accounts that may have reused credentials associated with the firm, and enable multi-factor authentication wherever available.
• Retain any official notices you receive from Clarkson Insurance Group and follow the guidance they provide regarding identity-protection services or further steps.
• Run a free exposure scan of your email address to check whether your information has already surfaced in known breach data sets.

Public detail on this incident remains limited. Continue to watch for updates from the organisation itself rather than relying solely on the threat actor’s claims.

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