Full Report
Link11 has published its European Cyber Report 2026, revealing that DDoS attacks reached a new level in 2025 and have become a permanent stress factor for digital infrastructures. The report shows that the number of documented attacks in the Link11 network rose by 75% in 2025, following explosive growth in the previous year (+137%). This establishes DDoS…
Analysis Summary
# Incident Report: European DDoS Escalation in 2025
## Executive Summary
The year 2025 marked a significant escalation in Distributed Denial of Service (DDoS) attacks across Europe, as documented by the Link11 European Cyber Report 2026. The number of documented attacks surged by 75% over 2024 figures, following a massive 137% increase the previous year, establishing DDoS as a "permanent structural burden." The attacks grew in magnitude, with multiple Terabit-scale events becoming common.
## Incident Details
- **Discovery Date:** Data compiled throughout 2025, published in March 2026.
- **Incident Date:** 2025 (Continuous monitoring throughout the year).
- **Affected Organization:** Multiple organizations and critical infrastructures across Europe monitored within the Link11 network.
- **Sector:** Broadly impacts Digital Infrastructure, Critical Infrastructure, Energy, and Government sectors.
- **Geography:** Europe.
## Timeline of Events
The provided text focuses on aggregate statistics rather than specific chronological events for a single attack. The progression highlights a trend:
### Initial Access
- **Date/Time:** Beginning of 2025, with escalating frequency throughout the year.
- **Vector:** High-volume, multi-terabit DDoS attacks.
- **Details:** Attacks utilized highly volumetric methods, evidenced by the strongest recorded attack reaching 1.33 Tbit/s, carrying over 120 million packets per second (Mpps).
### Lateral Movement
*Not applicable for volumetric DDoS attacks, as the objective is service disruption, not internal network compromise.*
### Data Exfiltration/Impact
- **Impact:** Service unavailability and degraded performance across digital infrastructures.
- **Scope:** Three separate attacks in 2025 surpassed the 1 Tbit/s threshold, which was considered exceptional in 2024.
### Detection & Response
- **Detection:** Attacks were documented within the Link11 network monitoring systems.
- **Response Actions:** The report implies that successful mitigation was undertaken to maintain service functionality, though specific organizational responses are not detailed.
## Attack Methodology
This context describes volumetric attacks rather than traditional malware or intrusion methods (MITRE ATT&CK TTPs).
- **Initial Access:** Volumetric flood attacks targeting network bandwidth and device capacity.
- **Persistence:** N/A (Attacks are generally short-lived, high-intensity events).
- **Privilege Escalation:** N/A.
- **Defense Evasion:** Leveraging sheer volume (Terabits per second) to overwhelm standard defenses.
- **Credential Access:** N/A.
- **Discovery:** N/A (Focus is on saturation, not reconnaissance).
- **Lateral Movement:** N/A.
- **Collection:** N/A.
- **Exfiltration:** N/A.
- **Impact:** Denial of service leading to infrastructure stress and operational disruption.
## Impact Assessment
- **Financial:** Unspecified, but implied significant due to the classification of DDoS as a "permanent structural burden."
- **Data Breach:** Not a data breach incident.
- **Operational:** Significant stress factor on digital infrastructures across Europe.
- **Reputational:** Potential reputational damage for targeted entities due to downtime.
## Indicators of Compromise
*As this is a summary of industry statistics, specific IoCs are not provided. Indicators are related to high-volume traffic.*
- **Network indicators:** Sustained traffic rates exceeding 1 Tbit/s (e.g., observed 1.33 Tbit/s).
- **File indicators:** N/A.
- **Behavioral indicators:** Sudden, massive spikes in network traffic volume (up to 120+ million packets per second).
## Response Actions
The response actions are inferred based on successful mitigation implied by the reporting structure:
- **Containment measures:** Successful application of advanced DDoS mitigation techniques to filter malicious traffic floods.
- **Eradication steps:** N/A.
- **Recovery actions:** Restoration of normal service levels post-mitigation.
## Lessons Learned
- **Key takeaways:** DDoS attacks have evolved from intermittent disruptions to a constant, predictable stressor on all connected digital infrastructure. Terabit-scale attacks are now common occurrences, not anomalies.
- **What could have been done better:** The report implies organizations must fundamentally shift security posture to treat high-volume resilience as a baseline requirement rather than an exception.
## Recommendations
- **Prevention measures for similar incidents:** Organizations and Critical Infrastructure providers must implement robust, scalable, and always-on DDoS protection mechanisms capable of handling multi-terabit traffic loads. Continuous monitoring and threat intelligence sharing for volumetric attacks should be prioritized.