Basically, a large number of organisations in multiple countries have been affected by ransomware, which is demanding payment in bitcoins. It appears to be on a much larger scale than most other cyber attacks we've seen, as it isn't just on one organisation, but many worldwise. It even includes England's/Scotland's NHS, which I think is pretty low even for a cyber attack, given that people's lives depend on this service, and now they've declared a major incident there. So what are other people's thoughts on this, and I'm not particularly informed on this type of attack, so could anyone with more technical know-how explain how this is able to affect multiple organisations on such a large scale?