On March 12th, in occasion of the 25th birthday of the World Wide Web, Sir Tim Berners-Lee made an open call for a “Magna Carta” to protect Web users. He said: "It's time for us to make a big communal decision. In front of us are two roads — which way are we going to go? Are we going to continue on the road and just allow the governments to do more and more and more control — more and more surveillance? Or are we going to set up a bunch of values? Are we going to set up something like a Magna Carta for the World Wide Web and say, actually, now it's so important, so much part of our lives, that it becomes on a level with human rights?" We all know that guaranteeing privacy and security at the same time in a world without the WWW is a challenge, and that each country addresses it in a different way by means of local regulations as well as international agreements. Identifying the right tradeoff on the Web is probably even more complicated, as we deal with a virtual world, where geographical borders loose their importance and role. The aim of this panel is to identify and discuss the most important issues that should be addressed in order to guarantee web users privacy, on one hand, without putting their security in danger, and web users security, on the other hand, without limiting their freedom by invading their private lives. Can semantics play any role in this trade-off? We ask our panelists to summarize in three main statements their view on, and possibly their solution to, this problem, hence giving their advice to the definition of a Web users “Magna Carta”.