Also, some tactical info:
You will almost always spawn at the first half of the forest (the latter half of Road of Sacrifice with the giant crabs). It is possible to spawn in the second area (the poison swamp) but only rarely, likely because most people don't bother going ember for it.
Like all invaders, hostile mobs will not attack you. However, the giant crabs can hurt you if you get caught in one of their attacks... and there are a lot of hostile mobs here to help. Potential gank spots include the area with the black knight and the two ghouls with crosses on their backs and the two hollow NPCs near the bonfire leading to the poison swamp.