Privacy Policy & Copyright Information

Last updated: 10 May 2025


Privacy Policy

Eigenigma Blog (“we,” “us,” or “our”) is a personal-publishing website operated by an individual based in the USA. We comply with the EU General Data Protection Regulation (“GDPR”) and other relevant data protection laws for visitors from the European Economic Area, the United Kingdom, and Switzerland.

This Privacy Policy explains how we collect, use, store, disclose, and protect your personal data. Please read it carefully. By using or accessing this website, you acknowledge that you have read and understood these practices.

1. Who is responsible for your data?

RoleContact details
ControllerEigenigma Blog, operated by an individual (“WindFade”)
Email1vua5eer1@mozmail.com
Postal addressRequest via email — for legal correspondence only
Data Protection OfficerNot required under Art. 37 GDPR; use the email above for any privacy matter

2. What personal data do we collect?

We collect the following categories of personal data, either directly from you or automatically when you visit our site:

  • Technical data: IP address, date/time of request, HTTP method, URL, HTTP status, bytes sent, referrer, user-agent, and preferred language headers (automatically sent by your browser; stored in server logs).
  • Preference data (necessary): Theme choice (light/dark) and cookie-consent status (stored in browser localStorage).
  • Analytical data (aggregated, non-identifiable): Page visited, referring website, approximate region (city-level), type of device and browser, time spent on the page, scroll depth (sent automatically by our privacy-focused analytics service, Plausible).
  • Communication data: Any personal information you provide in emails sent to us (e.g., name, email address, message content).

We do not intentionally collect special-category data (Art. 9 GDPR) or children’s data.

3. How do we use your data and on what legal basis?

We use your personal data for the following purposes:

PurposeData usedLegal basis (Art. 6 GDPR)
Serve the website & ensure securityTechnical dataArt. 6(1)(f) – Legitimate interest in operating a functional, secure website
Remember your theme (local storage)Preference dataArt. 6(1)(f) – Legitimate interest in providing essential usability features
Measure site performance & improve contentAnalytical dataArt. 6(1)(f) – Legitimate interest (analysis is fully anonymised; no consent required)
Handle enquiriesCommunication dataArt. 6(1)(b) – Performance of a contract or pre-contractual steps

We do not use your data for personalised advertising or profiling.

We do not carry out automated decision-making or profiling that produces legal or similarly significant effects (Art. 22 GDPR).

4. Who receives your data?

We share your data with the following service providers:

  • Netlify, Inc.: Hosting & edge network (USA) – data transferred under Standard Contractual Clauses (SCCs)
  • Cloudflare, Inc.: DNS & image CDN (USA) – data transferred under SCCs
  • Google LLC: Google Fonts (font delivery) – data transferred under SCCs
  • jsDelivr (Prospective OÜ & partners): JS/CSS delivery (global PoPs) – data transferred under SCCs where required
  • Plausible Insights OÜ: Provides aggregate, cookie-free web analytics – Servers located in Germany (EU); no personal data transferred

We will not share your personal data with third parties beyond these services, except as required by law (e.g., court order).

5. International transfers

The service providers listed above may process data on servers located outside the EEA, the UK, or Switzerland. These transfers rely on the European Commission’s Standard Contractual Clauses and, where applicable, additional technical measures such as encryption.

6. How long do we keep your data?

We retain your data as follows:

DataRetention periodDeletion method
Server logs (IP & HTTP metadata)30 daysAutomatic log rotation & secure deletion
Preference data in localStorageUntil you clear browser storageManual deletion via browser settings
Plausible Analytics24 monthsAutomatic expiry via Plausible dashboard
EmailsUp to 3 years after last correspondenceSecure mailbox purge

We may keep data longer if required by legal obligations or for defending legal claims. If you need to download or delete your data, click the mail icon on our page to send us an email. We will respond within 30 days.

7. Your rights under the GDPR

You have the following rights:

  • The right to access: Request copies of your personal data.
  • The right to rectification: Request that we correct any information you believe is inaccurate or complete information you believe is incomplete.
  • The right to erasure: Under certain conditions, request that we erase your personal data.
  • The right to restrict processing: Request that we restrict the processing of your personal data under certain conditions.
  • The right to object: Object to our processing of your personal data, under certain conditions.
  • The right to data portability: Request that we transfer your data to another organization or directly to you under certain conditions.
  • The right to withdraw consent: If processing is based on consent, you can withdraw it at any time without affecting prior processing.

To exercise these rights, please contact us at 1vua5eer1@mozmail.com. We have one month to respond.

You also have the right to lodge a complaint with a local supervisory authority. For UK visitors, this is typically the Information Commissioner’s Office (ICO).

8. Cookies & similar storage

We use no cookies for analytics or advertising.

8.1 What are cookies?

Cookies are small text files placed on your device to store information. Browsers also provide “localStorage,” which acts similarly but does not accompany every HTTP request.

8.2 Necessary cookies / storage

We use localStorage to remember your theme preference (light/dark) and your consent status. These are considered strictly necessary for basic functions.

8.3 How to control cookies

Most browsers allow you to block or delete cookies and localStorage. See allaboutcookies.org for guidance. Deleting necessary data may reset preferences.

9. Marketing

We do not run email newsletters or third-party advertising campaigns. If this changes, we will first seek your consent.

10. Links to other sites

Our blog posts may link to external websites (e.g., GitHub, academic papers). This Privacy Policy applies only to Eigenigma Blog. We are not responsible for external content or their privacy policies.

11. Changes to this policy

We review this notice regularly and may update it from time to time. Material changes will be posted on this page or highlighted within the website. This policy was last updated on 10 May 2025.

12. How to contact us

If you have any questions about this Privacy Policy or the data we hold on you, or if you would like to exercise one of your data protection rights, please contact:

  • Email: 1vua5eer1@mozmail.com
  • Postal: Request via email — for legal correspondence only

For oral assistance (e.g., visually impaired visitors), email us and request a callback in your preferred language.

13. How to contact the appropriate authority

If you believe we have not addressed your concern satisfactorily, you may contact your local Data Protection Authority. For UK visitors:

Information Commissioner’s Office (ICO)
Wycliffe House, Water Lane
Wilmslow, Cheshire SK9 5AF, United Kingdom
https://ico.org.uk
+44 303 123 1113

Copyright Information

NOTICE: All original content and articles published on this website, excluding any reproduced or reposted materials, are hereby released to the public domain under the Creative Commons Zero (CC0) 1.0 Universal License. The underlying source code used to format and display the content of this website is licensed under the Massachusetts Institute of Technology (MIT) License.

CC0 License

Creative Commons Legal Code

CC0 1.0 Universal

CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED HEREUNDER.

Statement of Purpose

The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent owner(s) (each and all, an "owner") of an original work of authorship and/or a database (each, a "Work").

Certain owners wish to permanently relinquish those rights to a Work for the purpose of contributing to a commons of creative, cultural and scientific works ("Commons") that the public can reliably and without fear of later claims of infringement build upon, modify, incorporate in other works, reuse and redistribute as freely as possible in any form whatsoever and for any purposes, including without limitation commercial purposes. These owners may contribute to the Commons to promote the ideal of a free culture and the further production of creative, cultural and scientific works, or to gain reputation or greater distribution for their Work in part through the use and efforts of others.

For these and/or other purposes and motivations, and without any expectation of additional consideration or compensation, the person associating CC0 with a Work (the "Affirmer"), to the extent that he or she is an owner of Copyright and Related Rights in the Work, voluntarily elects to apply CC0 to the Work and publicly distribute the Work under its terms, with knowledge of his or her Copyright and Related Rights in the Work and the meaning and intended legal effect of CC0 on those rights.

1. Copyright and Related Rights. A Work made available under CC0 may be protected by copyright and related or neighboring rights ("Copyright and Related Rights"). Copyright and Related Rights include, but are not limited to, the following:

i. the right to reproduce, adapt, distribute, perform, display, communicate, and translate a Work;
ii. moral rights retained by the original author(s) and/or performer(s);
iii. publicity and privacy rights pertaining to a person's image or likeness depicted in a Work;
iv. rights protecting against unfair competition in regards to a Work, subject to the limitations in paragraph 4(a), below;
v. rights protecting the extraction, dissemination, use and reuse of data in a Work;
vi. database rights (such as those arising under Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases, and under any national implementation thereof, including any amended or successor version of such directive); and
vii. other similar, equivalent or corresponding rights throughout the world based on applicable law or treaty, and any national implementations thereof.

2. Waiver. To the greatest extent permitted by, but not in contravention of, applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and unconditionally waives, abandons, and surrenders all of Affirmer's Copyright and Related Rights and associated claims and causes of action, whether now known or unknown (including existing as well as future claims and causes of action), in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each member of the public at large and to the detriment of Affirmer's heirs and successors, fully intending that such Waiver shall not be subject to revocation, rescission, cancellation, termination, or any other legal or equitable action to disrupt the quiet enjoyment of the Work by the public as contemplated by Affirmer's express Statement of Purpose.

3. Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "License"). The License shall be deemed effective as of the date CC0 was applied by Affirmer to the Work. Should any part of the License for any reason be judged legally invalid or ineffective under applicable law, such partial invalidity or ineffectiveness shall not invalidate the remainder of the License, and in such case Affirmer hereby affirms that he or she will not (i) exercise any of his or her remaining Copyright and Related Rights in the Work or (ii) assert any associated claims and causes of action with respect to the Work, in either case contrary to Affirmer's express Statement of Purpose.

4. Limitations and Disclaimers.

a. No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document.
b. Affirmer offers the Work as-is and makes no representations or warranties of any kind concerning the Work, express, implied, statutory or otherwise, including without limitation warranties of title, merchantability, fitness for a particular purpose, non infringement, or the absence of latent or other defects, accuracy, or the present or absence of errors, whether or not discoverable, all to the greatest extent permissible under applicable law.
c. Affirmer disclaims responsibility for clearing rights of other persons that may apply to the Work or any use thereof, including without limitation any person's Copyright and Related Rights in the Work. Further, Affirmer disclaims responsibility for obtaining any necessary consents, permissions or other rights required for any use of the Work.
d. Affirmer understands and acknowledges that Creative Commons is not a party to this document and has no duty or obligation with respect to this CC0 or use of the Work.

License

MIT License

Copyright 2017 Makito <master@keep.moe>

Copyright (c) 2023 Moeyua

Copyright (c) 2024 WindFade

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.