NPG Breach Incident Score: Analysis & Impact (NIG1766015751)

In this Rankiteo incident briefing, we review the NPG breach identified under incident ID NIG1766015751.

The analysis begins with a detailed overview of NPG's information like the linkedin page: https://www.linkedin.com/company/nightingalepropertygroup, the number of followers: 2181, the industry type: Real Estate and the number of employees: 174 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 756 and after the incident was 698 with a difference of -58 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 NPG and their customers.

On 09 September 2025, NPG disclosed Data Breach issues under the banner "NPG Data Breach".

NPG reported a data breach where sensitive personal identifiable information may have been compromised.

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

In response, teams activated the incident response plan, and stakeholders are being briefed through Data breach notification letters mailed to impacted individuals.

The case underscores how Completed, and recommending next steps like 12 months of complimentary credit monitoring services for affected individuals, with advisories going out to stakeholders covering Data breach notification letters with details of impacted information.

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.

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 access to its network, and access and acquisition of data by unauthorized third party and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating unauthorized access to its network (implied external entry). Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating unauthorized access suggests possible credential compromise. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating access and acquisition of data by unauthorized third party and Automated Exfiltration (T1020) with moderate confidence (60%), supported by evidence indicating potential exposure of sensitive PII between Sept 9-25. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (30%), supported by evidence indicating no evidence of ransomware, but data compromise implies impact and Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating unauthorized access and acquisition of data. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.