Payments are processed by Stripe Payments Europe Limited, 1 Grand Canal Street Lower, Grand Canal Dock, Dublin, D02 H210, Ireland ("Stripe"). Stripe acts as our data processor (Auftragsverarbeiter) under Art. 28 GDPR. We are the controller of payment-related personal data; Stripe processes it on our behalf under their Data Processing Agreement (https://stripe.com/legal/dpa).
Data processed via Stripe includes: your name, email address, payment method details (card brand, last four digits, expiry — we do not store the full card number), billing country, IP address, currency, amount, and transaction metadata (e.g. our internal user reference). Legal basis: Art. 6 (1) (b) GDPR (performance of contract).
For fraud prevention and global infrastructure, Stripe may transfer data to Stripe, Inc. in the United States. Such transfers are protected by the EU-U.S. Data Privacy Framework and Standard Contractual Clauses where applicable.
Stripe’s privacy policy: https://stripe.com/privacy. Stripe sets the cookies __stripe_mid, __stripe_sid, and m on its own domain (checkout.stripe.com) for fraud prevention; under § 25 (2) TDDDG these are strictly necessary and require no consent.