Full Report
Marsh says ransomware drove cyber insurance claims to second highest on record in 2024
Analysis Summary
The provided article is a high-level summary of **cyber insurance claim trends in the UK** reported by Marsh, rather than a detailed report on a single specific security incident. Therefore, the incident timeline, attack vectors, and specific response actions for a singular event cannot be fully detailed.
The summary below focuses on the trends, primary threat, and general impact observed across the aggregated insurance claims data for the relevant period (likely 2024 compared to 2023).
# Incident Report: Trends in UK Cyber Insurance Claim Volume (2024 vs. 2023)
## Executive Summary
UK companies filed the second-highest volume of cyber insurance claims on record in the reporting year (2024), largely driven by ransomware attacks, though the total volume decreased by 20% compared to the peak seen in 2023. Increased security posture requirements from insurers appear to be aiding organizational resilience, but sophisticated actors continue to target high-value sectors like finance and technology.
## Incident Details
- **Discovery Date:** Data analyzed covers claims filed throughout 2024 (compared against 2023 and prior years).
- **Incident Date:** Incidents occurred throughout 2024, with 2023 likely representing a previous peak (attributed to the MOVEit campaign).
- **Affected Organization:** Claims submitted by Marsh UK clients (various organizations).
- **Sector:** Claims increased in Communications, Media, Technology, Retail/Wholesale, Power/Utilities, and Financial Institutions.
- **Geography:** United Kingdom (UK).
## Timeline of Events
The article does not provide a specific incident timeline but notes comparative trends:
- **2023:** Unusually high volume of claims, potentially influenced by the MOVEit campaign.
- **2024:** Claims decreased by 20% compared to 2023, but remained approximately one-third higher than pre-2023 levels (2020-2022).
### Initial Access
- **Vector:** Ransomware breaches remain the biggest driver of claims. Opportunistic attacks are highlighted.
- **Details:** Specific vectors (e.g., phishing, exploitation) are not detailed, only the eventual impact method (ransomware).
### Lateral Movement
Not detailed in the provided summary.
### Data Exfiltration/Impact
- **Impact:** Ransomware demands and breaches necessitating insurance claims. Targeted sectors hold wealth of data and rely on complex third-party supply chains, increasing vulnerability to outages.
### Detection & Response
- **Detection:** Detection is implied by the filing of an insurance claim.
- **Response actions taken:** Not detailed specifically, but increasing insurer demands for improved security posture suggest pre-claim preventative and post-incident remediation actions are being enforced.
## Attack Methodology
Based on the primary causes cited:
- **Initial Access:** Unspecified, but related to exploitation allowing ransomware deployment.
- **Persistence:** Not detailed.
- **Privilege Escalation:** Not detailed.
- **Defense Evasion:** Not detailed.
- **Credential Access:** Not detailed.
- **Discovery:** Not detailed.
- **Lateral Movement:** Implied during ransomware execution.
- **Collection:** Not detailed.
- **Exfiltration:** Not detailed.
- **Impact:** Primarily Ransomware deployment and associated operational disruption.
## Impact Assessment
- **Financial:** Data on specific claim values is not provided, only the volume of incidents. Costs likely high, as evidenced by the necessity of filing claims.
- **Data Breach:** High-value data (implied by sector targeting; Financial Institutions, Tech).
- **Operational:** High vulnerability to outages, especially in sectors with complex third-party supply chains.
- **Reputational:** Not explicitly mentioned, but inherent in significant cyber incidents.
## Indicators of Compromise
No specific Indicators of Compromise (IP addresses, file hashes, domains) were mentioned in the trend summary.
## Response Actions
- **Containment/Eradication/Recovery:** Not detailed, as the report summarizes trends, not case studies. General improvement noted is insurers demanding better pre-coverage security posture.
## Lessons Learned
- Ransomware remains the principal cause of high-volume loss events for insurers.
- Financial institutions and professional services are persistent high-volume targets due to data wealth and complex supply chains.
- Insurer scrutiny regarding client security posture is increasing, suggesting that security improvements are being mandated as a prerequisite for coverage.
## Recommendations
- Organizations, especially in high-value sectors, must prioritize active defense against ransomware strains.
- Businesses should review and strengthen third-party risk management given the vulnerability introduced by complex supply chains.
- Continuous improvement of security posture is essential to meet evolving cyber insurance underwriting standards.