"When a user adds a website to their Dock, Safari will copy the website's cookies to the web app. That way, if someone is logged into their account in Safari, t

"When a user adds a website to their Dock, Safari will copy the website's cookies to the web app. That way, if someone is logged into their account in Safari, they will remain logged in within the web app. This will only work if the authentication state is stored within cookies. Safari does not copy over any other kind of local storage. After a user adds a web app to the Dock, no other website data is shared, which is great for privacy." What is the additional privacy risk from IndexedDB and localstorage? I would have thought apps that store everything locally, that don't require any backend at all are great for privacy, but what do I know, I don't have billions to spend on privacy branding.