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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.
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.