Create an account

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Letters, digits and @/./+/-/_ only.


Inform a valid email address.


  • Your password can’t be too similar to your other personal information.
  • Your password must contain at least 8 characters.
  • Your password can’t be a commonly used password.
  • Your password can’t be entirely numeric.


Enter the same password as before, for verification.





I acknowledge having read and accepted the Terms of Use and the Legal Mentions.

By submitting this User account creation form, I am informed that my personal data is collected on the basis of legitimate interest for the creation and management of a User account (article 6(1)(f) of the GDPR). It is processed by the « ChallengeData.ens.fr » team to provide access to the Challenges and communications relating to the Challenges I will participate in, in accordance with the privacy policy and the terms of use of the website. My data is kept for the time necessary to manage my User account.