Over here in the UK, we've just had a massive cyber attack on our health system - doctors and hospitals. Although, as health is a devolved area here in Wales and we have our own systems, no attacks yet (still waiting!). On the back of this, it seems that systems were using Windows XP - not that I'm in the know - perhaps HG could help out here - but it is suggested that it is not the most secure OS. Wait for it - our nuclear deterrent, Trident, is also run on XP. I read this article, but my interest / technical ability lies elsewhere:
Is a nuclear system running on XP a problem?