Twowolves
Explorer
I'm a little late to the party since Mr Jacobs has already replied, but I did find in the Bestiary Preview under the Swarm subtype entry it specifically listed immunity to sneak attack/precision based damage.
So I guess the answer is "yes, you can sneak attack anything" unless the monster's statblock specifically says you can't.
So I guess the answer is "yes, you can sneak attack anything" unless the monster's statblock specifically says you can't.