One or more embodiments described herein generally relate to methods, apparatus, and systems that use a circuit board with layered power filtering to restrain the power supply from acting as an unintended transport medium for data, thus increasing security of data as well as restricting data transport to an expected data transport medium. Generally, electronic devices, ranging from small embedded electronic devices to large electronic systems can include a power distribution system and electronic circuitry near the power distribution systems as a whole, near individual components of the power distribution systems, and/or near individual power transport mediums of the power distribution system. In some instances, information from the electronic circuitry can be unintentionally induced (e.g., electromagnetic induction) to the power distribution system. Therefore, such power distribution systems can potentially transport information via power transport mediums to an unintended recipient device (e.g., outside of and separate from the electronic circuitry) and expose the information. Such unintended transport of information to power distribution systems and subsequently power transport mediums can be reduced or prevented using a circuit board having the layered power filtering described herein.