Security Watch: Protecting a castle on a cloud

Cloud remains essential for online businesses, but it creates complex security threats

Before you can secure your data, you need to know exactly where all of your data resides. Picture: Getty

The word cloud, in the computing sense, has some problems. By its very nature it’s nebulous, acting as a shorthand for something too complex for many of us to describe.

The use of cloud as a way of describing how information is stored online dates back to the 1990s; internal documents from Compaq show it in use as early as 1996.

Before that, a cloud symbol was also used at Arpanet, the US Department of ...