Incident Score: Analysis & Impact (AFC1774456765)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of AFC Ajax'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 AFC Ajax 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 AFC Ajax breach identified under incident ID AFC1774456765.
The analysis begins with a detailed overview of AFC Ajax's information like the linkedin page: https://www.linkedin.com/company/afc-ajax, the number of followers: 127103, the industry type: Spectator Sports and the number of employees: 1252 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 704 and after the incident was 624 with a difference of -80 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 AFC Ajax and their customers.
Ajax (Amsterdamsche Football Club Ajax N.V.) recently reported "Ajax Confirms Data Breach Exposing Fan Data and Season Tickets", a noteworthy cybersecurity incident.
Dutch football club Ajax has acknowledged a data breach affecting its website, following reports by RTL Nieuws.
The disruption is felt across the environment, affecting Ajax website, fan data systems, and exposing Email addresses, names, birth dates, season ticket details, stadium ban records, with nearly Over 300,000 (potential), 42,000 season tickets, 538 banned supporters records at risk.
In response, moved swiftly to contain the threat with measures like API vulnerability patched, and began remediation that includes Security measures strengthened, and stakeholders are being briefed through Notified affected individuals.
The case underscores how Ongoing (Amsterdam Police Cybercrime Team), with advisories going out to stakeholders covering Affected individuals notified.
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 Exploit Public-Facing Application (T1190) with high confidence (90%), supported by evidence indicating vulnerability stemmed from an insecure API on Ajax’s website. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials in Files (T1552.006) with moderate to high confidence (70%), supported by evidence indicating insecure API allowing attackers to extract data without authentication. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating exposed email addresses, names, birth dates, season ticket details and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating data breach impacting over 300,000 registered Ajax fans. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating potential exposure of personal data, 42,000 season tickets stolen and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating possible link to LeakBase forum where Dutch databases were sold. Under the Impact tactic, the analysis identified Data Manipulation: Stored Data Manipulation (T1565.001) with moderate to high confidence (80%), supported by evidence indicating attackers reassign season tickets and modify stadium bans and Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating 42,000 season tickets may have been...disabled. Under the Defense Evasion tactic, the analysis identified Subvert Trust Controls: SIP and Trust Provider Hijacking (T1553.003) with moderate confidence (50%), supported by evidence indicating insecure API allowing unauthenticated data extraction. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- AFC Ajax Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/afc-ajax/incident/AFC1774456765
- AFC Ajax CyberSecurity Rating page: https://www.rankiteo.com/company/afc-ajax
- AFC Ajax Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/afc1774456765-ajax-breach-march-2026/
- AFC Ajax CyberSecurity Score History: https://www.rankiteo.com/company/afc-ajax/history
- AFC Ajax CyberSecurity Incident Source: https://nltimes.nl/2026/03/25/ajax-confirms-major-data-breach-affecting-fans-season-tickets
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf