The release of thousands of Tesco user account details today shows the security risks of being online. It wasn’t a Tesco site that was hacked but another site that held some user account details. It shows how our online security is totally dependent on other people’s security.

It doesn’t mean that everything in the cloud is bad. Far from it; it’s our new way of life. But we do have to take our personal security seriously and a single breach can unravel your entire online world. You wouldn’t, for example, use the same password or similar password for more than one site, would you?

Get ready for business-quality two factor authentication on every shopping site you use – your name plus a password and a one-time code generated on your mobile phone.