@medj.dz: Stripe says paid, so you ship. But your webhook URL is public, and without a signature check an attacker forges that event and gets your product for free. Same trick fakes upgrades, credits and access. Swipe for the fix. Save this and verify before you act. DM "VIP" for integration + API patterns DM "SERVICE" for a code review #cybersecurity #webdev #api #appsec #softwareengineer