Marks and Spencer Breach Incident Score: Analysis & Impact (MAR1768480120)

In this Rankiteo incident briefing, we review the Marks and Spencer breach identified under incident ID MAR1768480120.

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.

Global Organizations (Including Brazilian Organizations) recently reported "RSA 2026 Identity-Related Breach Report Findings", a noteworthy cybersecurity incident.

The 2026 RSA ID IQ Report reveals critical insights from over 2,100 cybersecurity, IAM, and IT professionals on identity-related breaches, their frequency, financial impacts, and emerging threats like IT help desk bypass and social engineering attacks.

The disruption is felt across the environment, plus an estimated financial loss of > $10M (for 24% of organizations).

Formal response steps have not been shared publicly yet.

The case underscores how Report Findings (No Specific Incident Investigation), teams are taking away lessons such as Identity-related breaches are increasing in frequency and cost, with IT help desk bypass and social engineering emerging as significant threats. Organizations must prioritize securing their identity estate and consider adopting passwordless authentication and AI-driven cybersecurity measures, and recommending next steps like Assess and strengthen identity and access management (IAM) capabilities, Prioritize passwordless authentication adoption and Implement AI-driven cybersecurity solutions to enhance threat detection and response, with advisories going out to stakeholders covering Leaders should act quickly to secure their identity estate and prioritize actions to mitigate identity-related risks.

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 social Engineering, and iT help desk bypass and social engineering attacks and Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including identity and Access Management (IAM) Failures, and iT Help Desk Bypass. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate to high confidence (70%), with evidence including identity-related breaches surged by 64%, and iAM Failures and Unsecured Credentials (T1552) with moderate to high confidence (80%), with evidence including iT help desk bypass, and identity-related data compromised. Under the Defense Evasion tactic, the analysis identified Modify Authentication Process (T1556) with moderate to high confidence (70%), with evidence including iT Help Desk Bypass, and iAM Failures. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), with evidence including identity-related data compromised, and personally Identifiable Information. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), with evidence including identity-related breaches surged by 64%, and high sensitivity of data. Under the Impact tactic, the analysis identified Data Destruction (T1485) with moderate confidence (50%), supported by evidence indicating identity-related breaches with high financial loss (> $10M). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.