Incident Score: Analysis & Impact (JONGENMCDGOL1775507547)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Jones Day's Breach 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 Jones Day 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 Jones Day breach identified under incident ID JONGENMCDGOL1775507547.
The analysis begins with a detailed overview of Jones Day's information like the linkedin page: https://www.linkedin.com/company/jones-day, the number of followers: 127186, the industry type: Law Practice and the number of employees: 6333 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 705 and after the incident was 645 with a difference of -60 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 Jones Day and their customers.
Jones Day recently reported "Jones Day Hit by Phishing Attack, Client Data Accessed in Breach Claimed by Cybercriminal Group", a noteworthy cybersecurity incident.
Global law firm Jones Day confirmed a phishing attack in which hackers accessed files belonging to 10 clients, a breach later claimed by the cybercriminal group *Silent*.
The disruption is felt across the environment, and exposing Client documents.
In response, and stakeholders are being briefed through Affected clients notified.
Overall, the incident is a reminder of why proactive monitoring and strong governance matter.
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 Phishing (T1566) with high confidence (95%), with evidence including jones Day confirmed a phishing attack, and attack vector such as Phishing, Phishing: Spearphishing Attachment (T1566.001) with moderate to high confidence (70%), supported by evidence indicating hackers accessed files belonging to 10 clients, and Phishing: Spearphishing Link (T1566.002) with moderate to high confidence (70%), supported by evidence indicating phishing attack in which hackers accessed client data. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (50%), supported by evidence indicating phishing attack likely involved credential harvesting and Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating unauthorized access to client documents. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating hackers accessed files belonging to 10 clients and Data from Information Repositories (T1213) with moderate to high confidence (85%), supported by evidence indicating accessed a limited set of dated client documents. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating breach claimed by cybercriminal group *Silent* and Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating listed Jones Day as a victim on its dark web leak site. Under the Impact tactic, the analysis identified Data Encrypted for Impact (Extortion) (T1471) with moderate to high confidence (70%), supported by evidence indicating cybercriminal group *Silent* (extortion-focused) and Defacement (T1491) with moderate confidence (60%), supported by evidence indicating listed Jones Day as a victim on its dark web leak site. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Jones Day Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/jones-day/incident/JONGENMCDGOL1775507547
- Jones Day CyberSecurity Rating page: https://www.rankiteo.com/company/jones-day
- Jones Day Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/jongenmcdgol1775507547-goldman-sachs-mcdonalds-jones-day-general-motors-breach-april-2026/
- Jones Day CyberSecurity Score History: https://www.rankiteo.com/company/jones-day/history
- Jones Day CyberSecurity Incident Source: https://www.investing.com/news/company-news/jones-day-shares-client-data-breach-affecting-10-firms--bloomberg-93CH-4599032
- 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