Marks and Spencer Breach Incident Score: Analysis & Impact (ADIHEAHARMARTHEJAG1767017696)

In this Rankiteo incident briefing, we review the Marks and Spencer breach identified under incident ID ADIHEAHARMARTHEJAG1767017696.

The analysis begins with a detailed overview of Marks and Spencer's information like the linkedin page: https://www.linkedin.com/company/marks-and-spencer, the number of followers: 736458, the industry type: Retail and the number of employees: 41277 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 100 and after the incident was 100 with a difference of 0 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 Marks and Spencer and their customers.

Marks and Spencer recently reported "an incident", a noteworthy cybersecurity incident.

Multiple high-profile cyber incidents affecting British businesses, charities, and government entities in 2025, including phishing attacks, digital shutdowns, and data breaches.

The disruption is felt across the environment, plus an estimated financial loss of hundreds of millions of pounds.

Formal response steps have not been shared publicly yet.

Overall, the incident is a reminder of why proactive monitoring and strong governance matter.

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 Phishing (T1566) with high confidence (90%), with evidence including phishing scams mentioned in description, and phishing listed in incident type. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (80%), with evidence including ransomware listed in incident type, and digital shutdown in operational impact and Service Stop (T1489) with moderate to high confidence (70%), supported by evidence indicating digital shutdown in operational impact. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), with evidence including data breaches listed in incident type, and customers data leaks in explanation. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (50%), supported by evidence indicating implied by phishing and data breaches as common credential access vectors. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.