Cold-call scammers now claim to be AV support staff, but misuse a widening range of system utilities to con victims into believing they have malware.
Android-specific software that checks for Carrier IQ could create an unanticipated problem.
[Update: the BBC Radio 6 issue is now confirmed by WebSense (apologies for misattributing it earlier!), who have more detail here, and note that areas of the BBC 1Xtra radio station Web site are also affected.] I hear from ESET colleagues in the UK that the BBC's Radio 6 homepage (one of the Beeb's music stations) is
The individual concerned had received a phone call from someone claiming to be from Microsoft, and informing him that notification had been received concerning a virus infection on his PC, and offering to help him to install antivirus software. When asked what antivirus software was being offered, the caller claimed that it was ESET's.