This answer on a question about what seems to be a rogue IT security adviser was deleted.

My guess about the closure is because it repeats another answer. However, it's just a guess. It would be nice if moderators tried, just a little, to say why the closure instead of just giving the generic "read the FAQ".

Also, there appear (to my eyes) to be many other duplicate answers on that question. Why are none of those closed by the moderator?

Pointers appreciated on a) why my answer was closed and b) why other answers on the same question are not!