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Ajax cybersecurity incidents and threat signals
ajax.nl
This company page brings together public reporting currently associated with Ajax. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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July 2, 2026
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Based on all published signals currently linked to Ajax. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Ajax reports new data leak and vulnerabilities after ethical hacker's findings
Football club Ajax has reported a new data leak to the Dutch Data Protection Authority (Autoriteit Persoonsgegevens) after an ethical hacker, Abdoul Rasnab, discovered new vulnerabilities in their digital systems this year (2026). These vulnerabilities allowed access to season ticket holder data, internal emails, and information about stadium bans. This follows a previous incident in 2017 that Ajax reportedly kept secret. The club has filed a complaint against the hacker after he went public with the findings.
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Questions about Ajax cybersecurity reporting
What does the Ajax page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Ajax.
Does every mention of Ajax appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.