Before deploying the SDC baseline, we need to be sure that vandalism and spam is caught. Two important mechanisms for that are AbuseFilter and SpamBlacklist.
Wikibase should provide automatic integration with these via the EditFilterHookRunner class, which should work for all Wikibase edits, regardless of MCR. But this needs to be verified before deployment.
Related: T189220: Ensure that relevant extensions are MCR-aware