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Major Data Leak at Platform with More than 1 Million Users, Affecting Chiro, KLJ, and Koor & Stem, Among Others.

Summary by Vrt
Software platform Twizzit, used by more than 5,000 federations, sports clubs, and youth associations, has been hit by a data breach. Chirojeugd Vlaanderen, KLJ, and Koor & Stem are among those affected. The hackers reportedly obtained mainly personal data, such as names, email addresses, and profile photos. According to Twizzit itself, the platform is used by more than 1 million people.

6 Articles

Center

The names, first names and e-mail addresses of several users, including minors, could be copied. ...

·Brussels, Belgium
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Chirojeugd Vlaanderen has been hit by a major data leak at software platform Twizzit. Spokeswoman Marij Germijns confirmed this to HLN. Hackers...

·Antwerp, Belgium
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Center

Software platform Twizzit, used by more than 5,000 federations, sports clubs, and youth associations, has been hit by a data breach. Chirojeugd Vlaanderen, KLJ, and Koor & Stem are among those affected. The hackers reportedly obtained mainly personal data, such as names, email addresses, and profile photos. According to Twizzit itself, the platform is used by more than 1 million people.

·Brussels, Belgium
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Lean Right

Chirojeugd Vlaanderen has been hit by a major data leak at software platform Twizzit. Spokeswoman Marij Germijns confirmed this to ‘HLN’. Hackers were able to copy members' personal data, such as names, email addresses, and any photos. The youth movement is therefore calling on its leaders, Chiro groups, and other involved parties to be extra vigilant for suspicious messages in the coming period. “Other clubs and federations are also involved,” …

·Kobbegem, Belgium
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Children playing rugby - Adobe Stock The Twizzit digital platform, which manages the communications, administration and payments of several sports federations and clubs as well as certain youth movements, has been the victim of a data leak.The personal data of several users, such as names, first names, e-mail addresses - including minors of age - have thus been copied. However, passwords, bank data and payment information have not been compromis…

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The British owner of the IT platform Twizzit has filed a complaint with the Belgian Centre for Cybersecurity following the discovery of a hacking incident. In the data leak, personal data was copied from, among others, Chirojeugd Vlaanderen.

·Belgium
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Het Laatste Nieuws broke the news in Kobbegem, Belgium on Saturday, September 26, 2026.
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