As far as I know, Swiss law does not allow for "secret data collecting orders", unlike US after "Patriot Act".
This is the benefit if being located in Switzerland, where banking is one of the main pillars of the economy and which historically has been much more supportive of personal privacy than most other countries.
They eventually caved under US pressure on some things, so it's not such a "haven" as it used to be, but I believe it is still the country that respects individuals' rights the most.
Not perfect by any means, just better than most others.