Cookie Policy

This Cookie Policy is separate from our Privacy Policy. For full details, please refer to the Privacy Policy or contact our DPO at postmaster@calculatorblackscholes.com.

Last updated: April 17, 2025

Data Controller: Black & Scholes Calculator

Contact: postmaster@calculatorblackscholes.com

1. Transparency and user information

2. Types of cookies we use

TypePurposeProviderName & LifetimeLegal Basis
Necessary Core functionality (banner, security) Black & Scholes Calculator cookie_consent: 1 year Art. 6(1)(f) GDPR
Preferences Remember user settings Black & Scholes Calculator lang: 1 year;
theme: 1 year		 Art. 6(1)(a) GDPR
Statistics Traffic & usage data Google Analytics _ga: 2 years;
_gid: 24h;
_gat: 1m		 Art. 6(1)(a) GDPR
Marketing Ad tracking & personalization Facebook, Google Ads _gcl_au: 3m;
IDE: 13m;
fr: 3m		 Art. 6(1)(a) GDPR

3. Google Analytics

We load GA4 only if you have given consent for statistics cookies. IP anonymization is enabled. See Google Privacy Policy and Standard Contractual Clauses for data transfers.

4. Obtaining free, specific and informed consent

We block all non-essential cookies until you make a choice. Use the banner or open Cookie Settings anytime.

5. Managing and revoking consent

Click Cookie Settings in the footer or via your browser to change your preferences.

6. Consent logging (client & server)

We store your choices in a cookie cookie_consent for 1 year with Secure and SameSite=Lax and domain=yourdomain.com. We also POST to /api/log-consent recording timestamp, IP, and selections.

7. Accessibility

The modal uses role="dialog", aria-live="polite", aria-modal="true", and aria-labelledby="cookie-modal-title". Focus trapping keeps keyboard navigation inside.

8. Changes to this Policy

We update the “Last updated” date when we make changes.

9. Further information

See our Privacy Policy or contact our DPO at postmaster@calculatorblackscholes.com.