Full Report
Verizon’s 2025 Data Breach Investigations Report noted a 37% increase in ransomware attacks and a 34% increase in exploited vulnerabilities. The post Verizon discovers spike in ransomware and exploited vulnerabilities appeared first on CyberScoop.
Analysis Summary
# Incident Report: Spike in Ransomware and Exploited Vulnerabilities (2023-2024 Findings)
## Executive Summary
Verizon's 2025 Data Breach Investigations Report revealed a significant escalation in cyber threats between November 1, 2023, and October 31, 2024, characterized by a 37% surge in ransomware activity and a 34% increase in the exploitation of vulnerabilities for initial access. While the prevalence of ransomware is growing, especially against SMBs, the actual payment rate dropped significantly. The primary growth vector was linked to the exploitation of vulnerabilities on network edge devices (VPNs, firewalls, routers).
## Incident Details
- **Discovery Date:** Findings published in the 2025 DBIR (Wednesday, after Oct 31, 2024)
- **Incident Period:** November 1, 2023, to October 31, 2024
- **Affected Organization:** The report aggregates data from 12,195 data breaches across various organizations.
- **Sector:** Not specified (Aggregated across industries)
- **Geography:** Global (Implied by the scope of the Verizon DBIR)
## Timeline of Events
### Initial Access
- **Date/Time:** Over the period Nov 1, 2023 – Oct 31, 2024 (Relative analysis)
- **Vector:** Exploited Vulnerabilities (20% of all initial access vectors) and Credential Abuse (nearly equal).
- **Details:** Exploitation of vulnerabilities on network edge devices (VPNs, firewalls, routers) grew eightfold, increasing from 3% to 22% of vulnerability exploitation incidents.
### Lateral Movement
- Data not explicitly detailed, but ransomware operators utilized initial access to deploy ransomware across victim networks.
### Data Exfiltration/Impact
- **What was stolen or damaged:** Organizations faced ransomware installation and potential data exfiltration (implied by the nature of modern ransomware). 44% of all breaches reviewed involved ransomware.
### Detection & Response
- **How it was discovered:** Verizon's research team collected data from over 12,195 data breaches, often utilizing data found on data leak sites to confirm ransomware incidence.
- **Response actions taken:** Organizations showed slower remediation efforts; only 54% of identified edge device vulnerabilities were fully patched, taking a median of 32 days.
## Attack Methodology
- **Initial Access:** Exploitation of Vulnerabilities (particularly on Edge Devices/VPNs); Credential Abuse.
- **Persistence:** Not explicitly detailed.
- **Privilege Escalation:** Not explicitly detailed.
- **Defense Evasion:** Not explicitly detailed, though the success of vulnerability exploitation suggests evasion of perimeter defenses.
- **Credential Access:** Credential abuse remained a major initial access vector alongside vulnerability exploitation.
- **Discovery:** Not explicitly detailed.
- **Lateral Movement:** Ransomware deployment required movement across the network.
- **Collection:** Not explicitly detailed, but common prerequisite for ransomware deployment.
- **Exfiltration:** Implied in modern ransomware attacks, though not the primary focus of this summary of findings.
- **Impact:** Deployment of ransomware, leading to operational disruption; 44% of breaches involved ransomware deployment.
## Impact Assessment
- **Financial:** Median ransom paid decreased from $150,000 (2023) to $115,000 (2024).
- **Data Breach:** 44% of all breaches involved ransomware. SMBs were hit hardest (88% of SMB breaches involved ransomware).
- **Operational:** Significant operational disruption due to ransomware deployment.
- **Reputational:** Not detailed, inferred due to data breaches.
## Indicators of Compromise
*Note: As this is a summary of findings, specific IoCs are contextual generalizations.*
- **Network indicators:** Exploited vulnerabilities in networking gear (e.g., [Ivanti], Palo Alto, Cisco, Fortinet products if applicable).
- **File indicators:** Ransomware payloads (specific names not provided).
- **Behavioral indicators:** High volume of vulnerability scanning/exploitation against network perimeter devices (VPNs, Firewalls) leading to ransomware execution.
## Response Actions
- **Containment:** Not detailed specific to individual incidents, but overall remediation was slow (median 32 days for edge devices).
- **Eradication:** Not detailed.
- **Recovery:** Not detailed.
## Lessons Learned
- **Key takeaways:** Ransomware attackers are pivoting sharply to exploiting publicly facing vulnerabilities, especially on edge devices, as a primary means of gaining network access. SMBs are disproportionately targeted by ransomware compared to larger enterprises.
- **What could have been done better:** Organizations significantly delayed patching critical edge device vulnerabilities (median 32 days required for remediation, with only 54% fully addressed).
## Recommendations
- Immediately prioritize patching and remediation efforts for vulnerabilities affecting network edge devices (VPNs, firewalls, routers).
- Enhance threat intelligence gathering focused on initial access vectors, given the rapid shift towards vulnerability exploitation.
- For SMBs, establish robust multi-factor authentication and endpoint detection/response capabilities to mitigate the high risk of ransomware exposure.