Encryption technologies
An idea that has taken a fast step from "something the big organizations are playing around with" to "everybody needs it" is the use of encryption. Most of us have been encrypting our website traffic for many years by using HTTPS websites, but even in that realm there are surprising exceptions with a lot of the cheap web hosting companies still providing login pages that transmit traffic in clear text. This is terrible, because with anything that you submit over the Internet now using regular HTTP or an unencrypted e-mail you HAVE to assume that it is being read by someone else. Chances are you are being paranoid and nobody is actually intercepting and reading your traffic, but you need to know that if you are accessing a website that says HTTP in the address bar, or if you are sending an e-mail from any of the free e-mail services, any data that is being entered on that webpage or in that e-mail can easily be stolen by someone halfway around the world. Data encryption...