Current protection model
Product assets live in private storage and are delivered through short-lived signed URLs.
The app validates checkout or lead-delivery state before generating a temporary access URL.
This makes files much harder to enumerate or scrape directly from storage.
What this does not change
The platform delivering the asset does not make the platform responsible for the content itself.
Sellers are still responsible for what the buyer was promised, what the file contains, and how disputes or complaints are handled.
Security around storage reduces unauthorized access, but it does not transfer commercial responsibility away from the seller.
Future hardening
A strong next step is to replace reusable delivery links with one-time or short-use delivery tokens before the final signed URL is generated.
Rate limits, logging, revocation, and malware scanning should be treated as follow-up hardening work as the product matures.