MysteryTwister C3

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Dear users, we apologize for the long response times of our server. We are currently in the closing stages of developing a completely redesigned site with much better performance, and we are confident to go live this summer. Thanks for your understanding.

Privacy Policy

MTC3 takes data privacy serious. This declaration is intended to inform the user of this website about the type and purpose of collecting and using personal data.

We use the data you provide to us, such as your name or e-mail address, as well as the usage data collected when using, solely for the purpose of using and securing the website, processing your inquiry or processing your online access. Your data will not be passed on to third parties. All personal data will only be stored by us for as long as this is necessary for the stated purpose or as long as we are legally obliged to store it. We do not collect personal data from you as far as possible. You can also use this website without entering personal data yourself, i.e. you can visit the freely accessible parts of the website without telling us who you are. In the case of active participation in challenges or feedback, however, an e-mail address is required.

When you visit, information about your access to can be stored on our server. Examples of access data are: date, time, viewed page, name of your internet provider, type of your internet browser, visited pages within our internet presence, your IP address. These data are evaluated by us exclusively for statistical purposes, to improve our offer and for IT security. These data are anonymized and do not belong to the personal data. The according log files are overwritten after 7 days.

You are entitled to get free information about your personal data stored by us and, if applicable, have a right to correct, block or delete this data. To do so, please send us an email to This email address is being protected from spambots. You need JavaScript enabled to view it..

If you have given your consent to the storage and processing of your data (e.g. for the purchase of a free newsletter), you can revoke your consent at any time with effect for the future.

When you visit, data may be stored on your computer. These data in the form of small text files are called "cookies" and make it easier for you to use Cookies enable us to store the settings you have made (such as the language of the website). Of course, you can deactivate the setting of cookies in your browser at any time for our website or delete them after the end of your session.

This website uses Matomo (formerly Piwik), a web analytics open-source software. Matomo uses “cookies”, which are text files placed on your computer, to help the website analyze how users use the site. The information generated by the cookie about your use of this website (including your IP address anonymized prior to its storage) will be stored on the server of the service provider in Germany. You may refuse the use of cookies by selecting the appropriate settings on your browser, however please note that if you do so you may not be able to use the full functionality of this website.

powered by the CrypTool project  CrypTool


   +++    [21:27 - 24.10.2021] mikinsget solved the Level I challenge 'One-Time Pad with Flaws'    +++    [15:29 - 24.10.2021] Jericho solved the Level I challenge 'Nils away on travel'    +++    [10:32 - 24.10.2021] jerva solved the Level II challenge 'The SZ42 Challenge — Part 13'    +++    [02:01 - 24.10.2021] Jet Sam solved the Level I challenge 'Caesar Encryption'    +++    [00:30 - 24.10.2021] Jet Sam solved the Level I challenge 'Number Sequence — Part 2'    +++