Commons uploads are checked whether the title respects the rules of the TitleBlacklist extension. We should do the same.
Respect the TitleBlacklist extension. That means, for users without the tboverwrite right, block all file moves when the TitleBlacklist contains the title.
@WMDE-Fisch already found out the following:
Currently the TitleBlacklist extension is not triggered when importing pages. The hook that the extension listens to is UserPermissionsErrorsExpensive triggered in TitlecheckPermissionHooks. We would need to implement that to make sure people do not upload bad titled images.