Incident Score: Analysis & Impact (HER1774196747)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Heritage Bank'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 Heritage Bank 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 Heritage Bank breach identified under incident ID HER1774196747.
The analysis begins with a detailed overview of Heritage Bank's information like the linkedin page: https://www.linkedin.com/company/heritage-bank_4, the number of followers: 10276, the industry type: Banking and the number of employees: 660 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 757 and after the incident was 691 with a difference of -66 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 Heritage Bank and their customers.
On 02 March 2026, Heritage Bank disclosed Data Breach issues under the banner "Heritage Bank Data Breach Exposes Sensitive Customer and Employee Information".
On March 2, 2026, Heritage Bank detected unauthorized activity within its network, revealing that an attacker had copied files from an internal employee file share server the previous day.
The disruption is felt across the environment, affecting Internal employee file share server, and exposing Personally identifiable information (PII) including account numbers, Social Security numbers (or ITINs), dates of birth, and addresses.
Formal response steps have not been shared publicly yet.
The case underscores how Under review, with advisories going out to stakeholders covering Affected individuals encouraged to explore legal options if they received a breach notice or suspect their data was exposed.
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 Valid Accounts (T1078) with moderate to high confidence (70%), with evidence including unauthorized activity within its network, and attacker had copied files from an internal employee file share server and Exploit Public-Facing Application (T1190) with lower confidence (30%), supported by evidence indicating attack vector not specified, but internal server was compromised. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating attacker accessed internal employee file share server containing PII and OS Credential Dumping (T1003) with moderate confidence (50%), supported by evidence indicating unauthorized activity suggests possible credential compromise. Under the Discovery tactic, the analysis identified File and Directory Discovery (T1083) with moderate to high confidence (80%), supported by evidence indicating attacker copied files from an internal employee file share server. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating files copied from internal server containing PII (account numbers, SSNs, etc.). Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating attacker had copied files from internal server (data exfiltration) and Transfer Data to Cloud Account (T1537) with lower confidence (40%), supported by evidence indicating no details on exfiltration method, but cloud transfer possible. Under the Impact tactic, the analysis identified Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (30%), supported by evidence indicating unauthorized copying of files may imply manipulation risk and Data Destruction (T1485) with lower confidence (20%), supported by evidence indicating no evidence of destruction, but unauthorized access raises risk. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Heritage Bank Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/heritage-bank_4/incident/HER1774196747
- Heritage Bank CyberSecurity Rating page: https://www.rankiteo.com/company/heritage-bank_4
- Heritage Bank Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/her1774196747-heritage-bank-breach-march-2026/
- Heritage Bank CyberSecurity Score History: https://www.rankiteo.com/company/heritage-bank_4/history
- Heritage Bank CyberSecurity Incident Source: https://www.claimdepot.com/investigations/heritage-bank-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