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Facebook turns over mother and daughter’s chat history to police resulting in abortion charges
(www.theverge.com)
This is a most excellent place for technology news and articles.
By default or is it opt-in? Glad to hear that they have taken steps to remediate the biggest weakness of their service.
I'm not entirely sure. I think I had to opt in when it came out, but I don't know if they've ever changed it.
IIRC it asks if you want to enable backup, and when turning on backup it's an option to encrypt it with a key or password. So by default there's no backup at all.