At least half a million routers and storage devices in dozens of countries around the world have been infected by a sophisticated botnet, in preparation for an alleged planned cyber attack on Ukraine. The botnet, which has been given the rather unglamorous name of VPNFilter, is believed to be likely to be controlled by a state-sponsored hacking group variously known variously as APT28, Pawn Storm, Sandworm, Fancy Bear and Sofacy. Cisco Talos researchers have been working with