They will set their DNS servers to drop all incoming connections to X. That can be done in each country. They can use Deep Packet inspection tools and go from there. If the decision is EU wide then they will roll that out.
There is no law that would permit the EU to do this. This would be a huge thing to introduce and implement, probably a 2-3 year project, and would almost certainly be strongly opposed by multiple member countries.
The EU can declare a company a criminal enterprise and the financial industry must then prevent EU citizens from transacting with them.
They will set their DNS servers to drop all incoming connections to X. That can be done in each country. They can use Deep Packet inspection tools and go from there. If the decision is EU wide then they will roll that out.
There is no law that would permit the EU to do this. This would be a huge thing to introduce and implement, probably a 2-3 year project, and would almost certainly be strongly opposed by multiple member countries.
Deep packet inspection? What do you mean? Are you talking about domain name confiscation or building a Great Firewall of EU?