A device attack is an exploit that takes advantage of a vulnerable device to gain access to a network. The term "device attack" was coined to differentiate such exploits from those targeting personal computers. The attack vector could be any other kind of Internet-connected device. Potential targets include not just smartphones, which are the most commonly cited example, but also network hardware, smart grid components, medical equipment and embedded systems among a great many other possibilities. Securing non-PC devices is problematic for a number of reasons. For one thing, many security measures, such as virus scanning, that are suitable for a PC, place too great a demand on the limited resources of smaller devices for memory, processor cycles and electrical power. Administration of patches and updates can be difficult because of sporadic connectivity to the corporate network.