Some kinds of abuse (cf T129845) use file formats with flexible metadata fields to camouflage illegal uploads; the payload is hidden in e.g. the EXIF description field of a JPEG file. There is little reason for legitimate metadata to be larger than a few kilobytes; if the total metadata size was made available to anti-abuse tools, that would make the filtering of such uploads much easier.
Description
Description
Status | Subtype | Assigned | Task | ||
---|---|---|---|---|---|
Open | None | T170251 Create AbuseFilter variable for file metadata size | |||
Declined | Cparle | T175599 File metadata size extraction scoping |
Event Timeline
Comment Actions
See also T154987
Calculating the size of 'file metadata' may require very deep analysis of the file binary data. Considering all the file formats that can be uploaded to Wikimedia, that could be quite a challenge.