Incident Score: Analysis & Impact (KER1780598240)
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 KerberRose'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 KerberRose 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 KerberRose breach identified under incident ID KER1780598240.
The analysis begins with a detailed overview of KerberRose's information like the linkedin page: https://www.linkedin.com/company/kerberrose-s-c-, the number of followers: 2809, the industry type: Accounting and the number of employees: 221 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 752 and after the incident was 669 with a difference of -83 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 KerberRose and their customers.
On 29 May 2026, KerberRose Wealth Management LLC disclosed Data Breach issues under the banner "KerberRose Wealth Management Data Breach Exposes Sensitive Information of 27,076 Individuals".
Wisconsin-based accounting firm KerberRose S.C.
The disruption is felt across the environment, affecting Backup platform for wealth management operations, and exposing Names, addresses, Social Security numbers, financial account details, bank information, dates of birth, with nearly 27,076 records at risk.
In response, and began remediation that includes Offering 24 months of free credit monitoring, credit reports, and fraud assistance, and stakeholders are being briefed through Breach notifications filed with attorneys general; dedicated helpline established.
The case underscores how with advisories going out to stakeholders covering Affected individuals offered 24 months of free credit monitoring and fraud assistance; dedicated helpline (1-877-426-6807) available until August 27, 2026.
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: Spearphishing Link (T1566.002) with moderate to high confidence (80%), supported by evidence indicating unauthorized third party accessed an employee’s email account and Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating accessed an employee’s email account. Under the Credential Access tactic, the analysis identified Brute Force: Password Guessing (T1110.001) with moderate confidence (60%), supported by evidence indicating accessed an employee’s email account (implied weak credentials) and Credentials from Password Stores (T1555) with moderate confidence (50%), supported by evidence indicating gaining limited access to a backup platform (possible credential reuse). Under the Lateral Movement tactic, the analysis identified Remote Services: Remote Desktop Protocol (T1021.001) with moderate confidence (60%), supported by evidence indicating gaining limited access to a backup platform and Use Alternate Authentication Material: Pass the Ticket (T1550.003) with moderate confidence (50%), supported by evidence indicating accessed an employee’s email account, then backup platform. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating exposed data included names, SSNs, financial account details and Data from Information Repositories: Sharepoint (T1213.002) with moderate to high confidence (70%), supported by evidence indicating backup platform used for wealth management operations. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating data breach impacting 27,076 individuals and Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating backup platform access suggests cloud/data transfer. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of destruction, but high-risk data exposed and Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating backup platform access could imply manipulation risk. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- KerberRose Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/kerberrose-s-c-/incident/KER1780598240
- KerberRose CyberSecurity Rating page: https://www.rankiteo.com/company/kerberrose-s-c-
- KerberRose Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ker1780598240-kerberrose-sc-kerberrose-wealth-management-llc-breach-april-2026/
- KerberRose CyberSecurity Score History: https://www.rankiteo.com/company/kerberrose-s-c-/history
- KerberRose CyberSecurity Incident Source: https://www.claimdepot.com/data-breach/kerberrose-2026
- 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