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U.S. officials urge Americans to use encrypted apps amid unprecedented cyberattack
(www.nbcnews.com)
This is a most excellent place for technology news and articles.
There's been a lot of good research done lately on how to achieve trusted communication on untrusted platforms and over untrusted channels. Encryption is a big part of that.
And there are a number of scenarios where the ISP creates a hostile environment without having been compromised by an external actor. A malicious government, for example, or an ISP wanting to exploit customer communications for commercial reasons.