This is an important step to ensure memory isn't leaked on the client. Revoke the object URL ( url) by calling URL.revokeObjectURL.
Client-side security checks are easy to circumvent by malicious users.Disable execute permissions on the file download area. Using a dedicated location makes it easier to impose security restrictions on downloadable files. Download files from a dedicated file download area on the server, preferably from a non-system drive.Security steps that reduce the likelihood of a successful attack are: Attackers may execute denial of service (DOS) attacks, API exploitation attacks, or attempt to compromise networks and servers in other ways. Use caution when providing users with the ability to download files from a server. For more information, see the Cross-Origin Resource Sharing (CORS) section. When downloading files from a different origin than the app, Cross-Origin Resource Sharing (CORS) considerations apply. Stream file content to a raw binary data buffer on the client: Typically, this approach is used for relatively small files ( 250 MB).This artcle covers approaches for the following scenarios: NET, such as Content Delivery Networks (CDNs). The guidance in this article also applies to other types of file servers that don't use.ASP.NET Core apps use Static File Middleware to serve files to clients of Blazor Server and hosted Blazor WebAssembly apps.Files can be downloaded from the app's own static assets or from any other location: