The way I've been doing it is via the WildFire page at https://wildfire.paloaltonetworks.com/ Go to the Reports page and find the entry (if any). Click on the report icon on the left column, scroll to the bottom of the page and report an incorrect verdict. This page only shows what your firewall has uploaded to WildFire, so if another PAN customer was patient zero, you won't see it in here. If you don't see it listed but still want to report it as a false positive, you'll need to upload the file in question on the Upload Sample page. Once the upload is complete, go back to the reports page and you'll see it at the top of the list. You'll then be able to report the incorrect verdict. If you have your firewall configured to send you the WildFire report PDF to you via e-mail, you can do the same report incorrect verdict via that PDF as well.
... View more