" 
 ::Crikey, I've no clue - can't remember if it started from an AIV report or an RPP or something else.  any ideas? As I recall, this particular user edits visa-related pages solely to remove references to China, Japan and (I think Taiwan), and insert South Korea instead. Not seen any other activity. If you can create a filter that detects and prevents edits by IPs that follow that pattern, it should do the job.  
 ::And thanks, by the way, for the swift response!  ‍ "