Many experimental hardware Trojans explore the potential threat vectors. However, if a Trojan largely affects area, power or operating speed, then it can be easy to detect. We explore the cost in area, power and operating speed of two small, focused attacks on the Parwan processor implemented with a standard cell library. The resulting cost in total area varied from a 0.05% to a 0.09% increase in the area of the design and similar results in the power consumption, while no delay overhead was imposed.