Example implementations relate to updating firmware. For example, a system according to the present disclosure may include a printing device and a computing device. The printing device may be on a network. The printing device may detect an intrusion against the printing device. The computing device may be on the network. The computing device may receive a broadcast reporting the intrusion directly from the printing device. The computing device may request, responsive to receiving the broadcast, an updated portion of a firmware code image for the computing device.