Reminder if one was needed that the future of your instant messaging shouldn't be above all "the same thing, but with more crypto" (e.g. Signal), but "less centralisation, then a reasonable amount of crypto" (federation e.g. XMPP or P2P ; though I don't know a P2P solution that's recommendable).

AIVD is the dutch intelligence agency. So that's an interesting source!

They're not hacking the systems directly, just phishing by the looks of it.