We get all sorts of pranksters/”hackers” on Skype. Some of them less serious, some more so. Here’s another variation. x says: people calling, saying it is a Skype admin test call and please leave your PC on and alone for a few hours x says: sounds very dodgy and dangerous ...

Two flaws in Cisco’s Network Admission Control (NAC) architecture allow unauthorised PCs to be viewed as legitimate devices on a network, according to German security researchers. A tool that takes advantage of the flaws was demonstrated at last month's Black Hat security conference in Amsterdam by Michael Thumann, chief ...