Thanks Matthias for reporting this! Tested and confirmed for TB 102.6.1 (64-bit), Win10. STR (on Windows) 1. View random message with random attachment `filename.ext` in message reader (e.g. testcase 1 attached here). 2. Select attachment > Save as... > `filename-save-as.ext`. 3. For comparison: Drag `filename.ext` to local OS folder. 4. Right-click on each downloaded file in Windows Explorer > Properties. 5. Check if the `Security` section shows the following MotW warning: `This file came from another computer and might be blocked to help protect this computer.` Actual - attachment downloaded via `Save as...` has mark of the web (MotW) - OK - attachment downloaded via drag and drop does *not* have MotW - this bug Expected - attachment downloaded via drag and drop should also have MotW - iow, adding MotW should not depend on method of downloading. (In reply to Matthias Zoellner from comment #0) > Steps to reproduce: > Generate a file with MotW: > ` Set-Content -Path '.\WithMotW.txt' -Stream Zone.Identifier -Value '[ZoneTransfer]','ZoneId=3'` Yes, that's in Windows Powershell, if you want to create a file with MotW locally. I've tried that and it works. Nice. Fwiw, it's not necessary to generate a file with MotW as an attachment for testing this bug, as the MotW doesn't survive attaching anyway. So any email message with a regular attachment can do - see testcase 1 attached. > Send the file per mail and use the "Save As" dialogue and another time Drag&Drop.
Bug 1805986 Comment 3 Edit History
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Thanks Matthias for reporting this! Tested and confirmed for TB 102.6.1 (64-bit), Win10. STR (on Windows) 1. View random message with random attachment `filename.ext` in message reader (e.g. testcase 1 attached here). 2. Select attachment > Save as... > `filename-save-as.ext`. 3. For comparison: Drag attachment `filename.ext` to local OS folder. 4. Right-click on each downloaded file in Windows Explorer > Properties. 5. Check if the `Security` section shows the following MotW warning: `This file came from another computer and might be blocked to help protect this computer.` Actual - attachment downloaded via `Save as...` has mark of the web (MotW) - OK - attachment downloaded via drag and drop does *not* have MotW - this bug Expected - attachment downloaded via drag and drop should also have MotW - iow, adding MotW should not depend on method of downloading. (In reply to Matthias Zoellner from comment #0) > Steps to reproduce: > Generate a file with MotW: > ` Set-Content -Path '.\WithMotW.txt' -Stream Zone.Identifier -Value '[ZoneTransfer]','ZoneId=3'` Yes, that's in Windows Powershell, if you want to create a file with MotW locally. I've tried that and it works. Nice. Fwiw, it's not necessary to generate a file with MotW as an attachment for testing this bug, as the MotW doesn't survive attaching anyway. So any email message with a regular attachment can do - see testcase 1 attached. > Send the file per mail and use the "Save As" dialogue and another time Drag&Drop.