Pat dry the cucumbers thoroughly. Set aside.Cut the tuna into small cubes and mash it with a fork. Set aside in a medium mixing bowl with the scallions.Whisk together the ingredients for the dressing in a small bowl and set aside.Whisk together the hot sauce and greek yogurt. Transfer to the bowl with the tuna and toss together until combined.Divide the cucumber noodles into two bowls and drizzle with the dressing, then top with spicy tuna and drizzle again with the dressing.