[MS-FSCC]: Zone.Identifier Stream Name Archived: 2026-04-05 13:52:33 UTC Windows Internet Explorer uses the stream name Zone.Identifier for storage of URL security zones. The fully qualified form is sample.txt: Zone.Identifier:$DATA The stream is a simple text stream of the form: [ZoneTransfer] ZoneId=3 [MSDN-SECZONES] gives an explanation of security zones. Source: https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/6e3f7352-d11c-4d76-8c39-2516a9df36e8 https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/6e3f7352-d11c-4d76-8c39-2516a9df36e8 Page 1 of 1