How Big a Threat?

Some of my brethren were rescued from a corrupt furbolg in Teldrassil, and I've vowed to stop any more atrocities before more of our kind are injured... or worse. I have seen a couple hints of corruption in Darkshore already, but I have yet to find any widespread signs. I think it would be logical if the investigation continued with the furbolgs. Would you find one of their camps, and return to me if you see any signs of corruption?