Ajax suffers major own goal as data breach hits personal info of 300,000 fans

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• Ajax football club suffers breach exposing sensitive fan data
• Ethical hacker showed vulnerability in app affecting 300,000 accounts
• Flaw allowed ticket transfers, stadium ban removals, and access to personal details

Ajax Amsterdam, one of the biggest football clubs in the Netherlands and across Europe, has confirmed it suffered a data breach in which it allegedly lost sensitive data on 300,000 people.

The club published a press release saying it had recently discovered a hacker “unlawfully gaining access to parts” of its systems.

“Data was viewed”, the club said, adding that the hacker accessed emails of “a few hundred people”. Ajax also said that for fewer than 20 people who are banned from the stadium, their names, email addresses, and birth ...