Incident Score: Analysis & Impact (BAY1776810742)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Bayside Dental's Ransomware 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 Bayside Dental 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 Bayside Dental breach identified under incident ID BAY1776810742.
The analysis begins with a detailed overview of Bayside Dental's information like the linkedin page: https://www.linkedin.com/company/bayside-dental, the number of followers: 25, the industry type: Hospitals and Health Care and the number of employees: 36 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 771 and after the incident was 672 with a difference of -99 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 Bayside Dental and their customers.
On 13 March 2026, Bayside Dental disclosed Ransomware issues under the banner "Bayside Dental Ransomware Attack".
Bayside Dental, a Washington-based dental practice in Anacortes, suffered a ransomware attack on January 5, 2026, when unauthorized access to its network was detected.
The disruption is felt across the environment, and exposing 580 GB.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Secured systems.
The case underscores how Ongoing, with advisories going out to stakeholders covering Breach notifications sent to affected individuals.
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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating unauthorized access to its network was detected and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating attack vector not specified, but unauthorized access occurred. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating ransomware attack on January 5, 2026. Under the Persistence tactic, the analysis identified Account Manipulation (T1098) with lower confidence (40%), supported by evidence indicating unauthorized access to its network was detected. Under the Privilege Escalation tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating access to sensitive PHI and PII data. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating ransomware group Sinobi claimed responsibility and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (50%), supported by evidence indicating company secured its systems post-detection. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating social Security numbers, health insurance details compromised. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate confidence (50%), supported by evidence indicating access to sensitive PHI and PII data and File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating 580 GB of data stolen. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating medical records, Social Security numbers, PHI compromised and Data from Network Shared Drive (T1039) with moderate to high confidence (70%), supported by evidence indicating 580 GB of data exfiltrated. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating 580 GB of data stolen, threatened to publish on dark web and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating sinobi claimed responsibility via Tor network post. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating ransomware attack on January 5, 2026 and Data Destruction (T1485) with moderate confidence (50%), supported by evidence indicating files containing PHI may have been accessed or exfiltrated. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Bayside Dental Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/bayside-dental/incident/BAY1776810742
- Bayside Dental CyberSecurity Rating page: https://www.rankiteo.com/company/bayside-dental
- Bayside Dental Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/bay1776810742-bayside-dental-ransomware-january-2026/
- Bayside Dental CyberSecurity Score History: https://www.rankiteo.com/company/bayside-dental/history
- Bayside Dental CyberSecurity Incident Source: https://www.claimdepot.com/investigations/bayside-dental-data-breach-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