Incident Score: Analysis & Impact (GCO1774347825)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of GCORE's Cyber Attack and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts GCORE Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the GCORE breach identified under incident ID GCO1774347825.
The analysis begins with a detailed overview of GCORE's information like the linkedin page: https://www.linkedin.com/company/gcore, the number of followers: 0, the industry type: Information Services and the number of employees: 3 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 793 and after the incident was 778 with a difference of -15 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on GCORE and their customers.
A newly reported cybersecurity incident, "Surge in DDoS Attacks in Q3–Q4 2025: New Era of Scale and Sophistication", has drawn attention.
A recent Gcore Radar report covering Q3–Q4 2025 highlights a dramatic escalation in DDoS attack activity, with volumes, frequency, and tactical complexity reaching unprecedented levels.
Impact assessments are still underway, so the full scope is not yet clear.
Formal response steps have not been shared publicly yet.
The case underscores how teams are taking away lessons such as The DDoS threat landscape has entered a phase of accelerated diversification, with attackers leveraging automation and global botnet infrastructure to launch larger, more targeted campaigns, and recommending next steps like Mitigation strategies should address threats at their origin, including enhanced monitoring, adaptive behavioral WAF, and on-demand scrubbing services.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Network Denial of Service (T1498) with high confidence (90%), with evidence including dDoS attack activity...volumes, frequency, and tactical complexity, and 1.3 million DDoS attacks in Q4 2025. Under the Impact tactic, the analysis identified Endpoint Denial of Service (T1499) with high confidence (90%), with evidence including peak attack volumes reached 12 Tbps, and 75% of network-layer attacks lasted under one minute, Application Layer DoS (T1499.004) with moderate to high confidence (80%), supported by evidence indicating application-layer attacks grew longer, with 64% exceeding 10 minutes, and Resource Hijacking (T1496) with moderate to high confidence (70%), supported by evidence indicating expansion of insecure IoT ecosystems, providing attackers with larger botnet resources. Under the Command and Control tactic, the analysis identified Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating aISURU botnet identified as a key driver of regional activity. Under the Resource Development tactic, the analysis identified Botnet (T1583.005) with moderate to high confidence (80%), supported by evidence indicating expansion of insecure IoT ecosystems, providing attackers with larger botnet resources and Malware (T1588.001) with moderate to high confidence (70%), supported by evidence indicating broader access to attack tools, lowering the barrier to entry for cybercriminals. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- GCORE Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/gcore/incident/GCO1774347825
- GCORE CyberSecurity Rating page: https://www.rankiteo.com/company/gcore
- GCORE Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/gco1774347825-gcore-cyber-attack-july-2025/
- GCORE CyberSecurity Score History: https://www.rankiteo.com/company/gcore/history
- GCORE CyberSecurity Incident Source: https://gbhackers.com/gcore-radar-report-reveals-150-surge-in-ddos-attacks-year-on-year/
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf