I think its real...
If nexon really thinks u hack, RARELY they check ur computer's history (They cant check Google Chrome)
If ur using mozzila, go to tools, addons and plugins. Then find nexon game controler and disable it.
Even if this isnt real. Just be on the safe side
lol who doesnt know about nexon game controller but tehy cant do shat to me cause i run a custom browser that saves hidden history, they can try and try but theyll never find it