Privacy Policy

Last updated: August 19, 2025

Dr. Piotr Gryko (“we,” “our,” or “us”) operates the website piotrgryko.com (the “Service”). This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our Service.

Information We Collect

Analytics Data

Cookieless Analytics (Always Active)

We use Umami, a privacy-first analytics service that collects basic website usage data without cookies or personal identification:

Pages visited and time spent on each page
Referrer information (which website brought you here)
General geographic location (country/region level only)
Device and browser information (type, screen resolution, etc.)
No personal data or cross-site tracking

With your explicit consent, we also use Google Analytics to collect more detailed data:

User behavior patterns across visits
Campaign tracking from marketing efforts
Enhanced geographic data
Demographics (age ranges, interests when available)
Cross-device tracking capabilities

Technical Data (Automatically Collected)

Our web server automatically collects standard technical information necessary for website operation:

Server logs for debugging and security purposes
Error logs to maintain website functionality

How We Use Information

Analytics data helps us understand which content is most valuable to readers and improve the website experience. We use this information to:

Analyze website traffic and usage patterns
Improve content and website performance
Understand which topics are most interesting to our audience

We do not sell, trade, or share your personal information with third parties, except:

Umami Analytics: Basic usage data is processed by our privacy-first analytics service (no personal data shared)
Google Analytics: When you consent to enhanced analytics, data is processed by Google under their privacy policy
Legal compliance: If required by law or to protect our rights

Your Privacy Choices

Cookieless Analytics

Umami: Always active, no consent needed (GDPR compliant, no cookies, no personal data)
Privacy-first: Tracks only basic usage statistics without identifying users

You have full control over enhanced Google Analytics tracking:

Initial choice: A banner allows you to accept or reject Google Analytics cookies
Change your mind: Use the button below to withdraw consent at any time
No tracking without consent: Google Analytics cookies are never set without your explicit permission

Manage Your Cookie Preferences:

This will remove all analytics cookies and reload the page to reset tracking.

Data Retention

Analytics data: Retained by Google Analytics according to their data retention settings (26 months maximum)
Consent records: Stored locally in your browser for 1 year, then automatically expire

Cookies and Tracking

We only use cookies with your consent:

Analytics Cookies (Optional)

_ga - Distinguishes unique users
_ga_* - Stores campaign and session data
_gid - Distinguishes unique users (24-hour expiry)

Essential Cookies

piotr-gryko-ga-consent - Remembers your cookie preferences (stored locally in your browser)

International Data Transfers

When you consent to analytics, your anonymized data may be transferred to and processed in countries outside your jurisdiction, including the United States, where Google Analytics servers are located.

Children’s Privacy

This website does not knowingly collect personal information from children under 13. If we discover that a child under 13 has provided us with personal information, we will delete it immediately.

Data Security

We implement appropriate technical and organizational measures to protect your data:

HTTPS encryption for all website traffic
Anonymized IP addresses in Google Analytics
No personal data storage on our servers
Regular security updates to website infrastructure

Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated “Last updated” date. For significant changes, we may provide additional notice through the website.

Contact Information

If you have questions about this privacy policy or our data practices, please contact:

Dr. Piotr Gryko
Email: piotr.gryko@gmail.com
Website: piotrgryko.com

For visitors in the European Union, our legal basis for processing personal data is:

Consent (Article 6(1)(a) GDPR): For analytics tracking
Legitimate interest (Article 6(1)(f) GDPR): For essential website functionality and security

You have the right to:

Access your personal data
Rectify inaccurate personal data
Erase your personal data
Restrict processing of your personal data
Data portability
Object to processing
Withdraw consent at any time

To exercise these rights, please contact us at the email address above.

Privacy