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Analyze » Appalachian Community Federal Credit Union » APP1768914191

Incident Score: Analysis & Impact (APP1768914191)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-71
Company Score Before Incident637 / 1000
Company Score After Incident566 / 1000
Company LinkView Appalachian Community Federal Credit Union Profile
INCIDENT NUMBERAPP1768914191
Type of Cyber IncidentBreach
ATTACK VECTORNA
DATA EXPOSEDSensitive personal information
INCIDENT DATE20/01/2026
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Appalachian Community Federal Credit Union'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 Appalachian Community Federal Credit Union 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 Appalachian Community Federal Credit Union breach identified under incident ID APP1768914191.

The analysis begins with a detailed overview of Appalachian Community Federal Credit Union's information like the linkedin page: https://www.linkedin.com/company/appalachian-community-federal-credit-union, the number of followers: 557, the industry type: Financial Services and the number of employees: 50 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 637 and after the incident was 566 with a difference of -71 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 Appalachian Community Federal Credit Union and their customers.

Appalachian Community Federal Credit Union (ACFCU) recently reported "Appalachian Community Federal Credit Union Data Breach", a noteworthy cybersecurity incident.

Appalachian Community Federal Credit Union (ACFCU), a Tennessee-based financial institution, recently disclosed a significant data security breach that occurred last year.

The disruption is felt across the environment, and exposing Sensitive personal information.

Formal response steps have not been shared publicly yet.

The case underscores how Ongoing.

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 confidence (60%), supported by evidence indicating unauthorized access to customer data, Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating system vulnerability may have been exploited, and Trusted Relationship (T1199) with lower confidence (40%), supported by evidence indicating insider threat not ruled out. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate confidence (50%), supported by evidence indicating sensitive personal information compromised and OS Credential Dumping (T1003) with lower confidence (40%), supported by evidence indicating unauthorized access to member data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (70%), supported by evidence indicating sensitive personal information belonging to its members. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating data breach exposing sensitive member information and Transfer Data to Cloud Account (T1537) with lower confidence (40%), supported by evidence indicating persistent threat of unauthorized access. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating long-term reputational damage for affected institutions and Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating identity theft, financial fraud risks highlighted. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Valid Accounts (60%)
Exploit Public-Facing Application (50%)
Trusted Relationship (40%)
Credential Access
Credentials from Password Stores (50%)
OS Credential Dumping (40%)
Collection
Data from Local System (70%)
Exfiltration
Exfiltration Over C2 Channel (60%)
Transfer Data to Cloud Account (40%)
Impact
Data Destruction (30%)
Stored Data Manipulation (40%)

Sources & References