Burp Intruder is a powerful tool for automating customized attacks against web applications. It can be used to automate all kinds of tasks that may arise during your testing.
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This release adds a new scan check for external service interaction and out-of-band resource load via injected XML doctype tags.
Burp Scanner now modifies XML in requests to inject a doctype tag that references a Burp Collaborator URL, and reports an appropriate issue based on any observed interactions (DNS or HTTP) that reach the Burp Collaborator server.