The founder's identity has long been a mystery.

‘It is a very personal impact from a very big company who really don’t care.'

We're not convinced.

It has been described as the 'the worst day in the history of the Russian air force'.

They said they are 'ready to go' as soon as they get the green light.

Hackers are not deploying sophisticated technical attacks.

WhatsApp has already stopped working on some phones.

WhatsApp has already stopped working on some phones.

Flaws mean hackers can 'worm' their way into your devices.