What may be the most comprehensive Internet census to date has given a fascinating snapshot of today’s interconnected world. The research was carried out by an anonymous hacker who illegally infiltrated computer networks around the world, and mapped what they found.

There are 1.3 billion IP addresses (individual location identifiers) in use today, of which around 10 per cent are unsecure, the paper estimates. But they are very geographically concentrated; the vast areas of darkness are striking: Read more