1. Safety requirements

It's not uncommon to talk about the security of Internet exchanges, usually to say how risky it is to trade on this network. The fact that data circulates on networks open to all, and that servers or workstations can be accessed from anywhere in the world, can give cause for concern. So what are the security issues to be addressed when it comes to e-commerce (in the sense of commercial transactions) or any other type of exchange over the Internet? Let's take a look at some of them, after an aside on terminology.