https://bugzilla.wikimedia.org/show_bug.cgi?id=37615

--- Comment #6 from Matthias Mullie <[email protected]> 2012-09-27 10:44:25 
UTC ---
As previously mentioned, the reason for the common vandalism filter to
malfunction is that is had automatically shut of because too many posts (> 5%)
were being flagged by the filter. This is a safety precaution built into
AbuseFilter to ensure to filter out defective filters.

The solution is relatively straightforward. We can't reduce the amount of crap
being submitted, and we shouldn't touch the built-in AbuseFilter safety
precautions (or we risk some day blocking edits if a filter malfunctions) - so
we should split up the filter into several smaller parts: instead of having 1
filter flag 10% (made the number up, not sure about the actual number) of the
feedback, we can have 5 filters flag 2% each.

The original Common Vandalism filter
(http://en.wikipedia.org/wiki/Special:AbuseFilter/460) has been split up in 5
smaller filters:
* http://en.wikipedia.org/wiki/Special:AbuseFilter/460
* http://en.wikipedia.org/wiki/Special:AbuseFilter/494
* http://en.wikipedia.org/wiki/Special:AbuseFilter/495
* http://en.wikipedia.org/wiki/Special:AbuseFilter/496
* http://en.wikipedia.org/wiki/Special:AbuseFilter/497

I have not made any changes to what exactly is being filtered, only split it
up.

If necessary, we can split this up even further in the future.

The added benefit of splitting this up is that, in the event that one of the
filters still meets the threshold, the 4 other filters will still work just
fine.


Please test the filters thoroughly (as a logged out user, autoconfirmed users
are not checked), though they seem to work just fine to me.

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