By the way, the earlier posted article https://restoreprivacy.com/protonmail-discloses-user-data-leading-to-arrest-in-spain had an update starting at the paragraph with title Update: Statement from Proton and additional commentary
As someone who has worked fraud and online investigations, and both written and served search warrants; it is not an option. A probable cause affidavit is presented to a judge and if the judge agrees there is sufficient probable cause, a search warrant is issued. This is an order by the judge and not optional. The judge can hold the company in contempt if they refuse to obey his/her order.
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Proton complies with Swiss law, and has to be channeled through Swiss official channels who rely the request.
So there’s jurisdiction.
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I would say your interpretation was a bit extreme. Nobody implied a warrant from anywhere in the world.
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