<p></p>
<p dir="auto">To add some numbers here, <a href="https://www.openstreetmap.org/user_blocks/16058" rel="nofollow">this account</a> managed 23 changesets, but they were submitted in just 3 minutes.  The DWG currently does "after the event" monitoring and potentially blocking (which caught this user at the end of their editing spree), and could potentially also look at bounding box size too, but API-level blocking is a whole other issue - both I presume to implement in the first place and to make sure that "innocent" users are not unduly affected.</p>
<p dir="auto">I can probably figure out how to get a list of accounts who might have been affected by a block on "large" changesets among the first X submitted (to see which were actually genuine), if it would help.</p>

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