it’s possible to make sure that your private conversations are actually private. It starts with installing an app known as Signal, and getting your friends to install it too. Then you’ll want to tweak the settings to lock everything down.
From Russian hacking to WikiLeaks, Edward Snowden and CIA cyber weapons, does digital surveillance mean the end of privacy?
With voice recognition software being used in household products, Dr Hannah Fry explores how it works – and what the future might bring.