This 15,000 guess is probably the one's in the UK that think it is OK to run with no Anti Virus, still on old or vanilla OS's and click away at email links. It's email phishing links that seem to be main intrusion route.
The real reports correctly identify the risk as small to those of us who keep ourselves up to date.
The best advice I can give, which mimics the experts, is to get a sizeable external USB drive to match your needs and backup all your 'data'
and ensure you disconnect the device after the backup permanently connected external drives are vulnerable.
I use SyncBackFree to perform all my backups, both automatic and manual. Make sure you get the install program from 2brightsparks as there are other dodgy clones in a Google search.
http://www.2brightsparks.com/freeware/freeware-hub.htmlOn the millennium bug side of things, this was a simple date string that needed a rework. Old mainframe computers from the 80's used simple dates as YYMMDD. This meant that under normal circumstances 990601 (1st June 1999) would indeed be greater than 981101 (1st November 1998). However, move on a year and here is the problem. 000601 (1st June 2000) isn't greater than 991101 (1st November 1999) and any software that performs date comparisons and subsequent actions will fail as a bug.
The fix was to insert another piece of working storage to include CC (CCYYMMDD). The software would then say if YY < 49 then CC = 20. Else CC=19. The assumption is that by 2049 all this software will have expired but I bet it hasn't so come 2050 there could be some rare issues still.