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Analyze » Hennessy Advisors, Inc. » HEN1772152350

Incident Score: Analysis & Impact (HEN1772152350)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-96
Company Score Before Incident695 / 1000
Company Score After Incident599 / 1000
Company LinkView Hennessy Advisors, Inc. Profile
INCIDENT NUMBERHEN1772152350
Type of Cyber IncidentBreach
ATTACK VECTORNA
DATA EXPOSEDPersonal information, including names paired...
INCIDENT DATE25/02/2026
STATUSOngoing (Lynch Carpenter, LLP investigation)

Key Highlights From The Incident Analysis

  • Timeline of Hennessy Advisors, Inc.'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 Hennessy Advisors, Inc. 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 Hennessy Advisors, Inc. breach identified under incident ID HEN1772152350.

The analysis begins with a detailed overview of Hennessy Advisors, Inc.'s information like the linkedin page: https://www.linkedin.com/company/hennessy-advisors-inc., the number of followers: 191, the industry type: Investment Management and the number of employees: 10 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 695 and after the incident was 599 with a difference of -96 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 Hennessy Advisors, Inc. and their customers.

On 26 February 2026, Hennessy Advisors, Inc. disclosed Data Breach issues under the banner "Hennessy Advisors Data Breach Affecting Over 12,000 Individuals".

Hennessy Advisors, Inc.

The disruption is felt across the environment, and exposing Personal information, including names paired with driver’s licenses and financial account details, with nearly 12000 records at risk.

Formal response steps have not been shared publicly yet.

The case underscores how Ongoing (Lynch Carpenter, LLP investigation).

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%), supported by evidence indicating unauthorized access to the company’s network and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating cybersecurity incident involving unauthorized access. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating names paired with driver’s licenses and financial account details and Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating potentially compromising sensitive data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating exposed the personal information of more than 12,000 individuals and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating names paired with driver’s licenses and financial account details. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating data breach affecting over 12,000 individuals and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating unauthorized access to the company’s network. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating cybersecurity incident involving unauthorized access and Stored Data Manipulation (T1565.001) with moderate confidence (50%), supported by evidence indicating potentially compromising sensitive data. 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 (70%)
Exploit Public-Facing Application (50%)
Credential Access
OS Credential Dumping (60%)
Unsecured Credentials (60%)
Collection
Data from Local System (80%)
Data from Information Repositories (70%)
Exfiltration
Exfiltration Over C2 Channel (70%)
Transfer Data to Cloud Account (50%)
Impact
Data Destruction (40%)
Stored Data Manipulation (50%)

Sources & References