Hints of an October 12 virus have been flying around for some time – the thing has been tagged Datacrime, attaches itself to the MS-DOS .COM files and reformats track zero of the hard disk, effectively erasing it (CI No 1,230) – and now the evil thing has turned up in the Danish Postgiro network of 260 personal computers, which is described as the largest such network in Scandinavia: 20 specialists are now having to check 200,000 floppy disks to make sure that they are free from the virus, which is set to come alive on October 12 or 13, and will continue its trail of destruction thereafter until deleted.