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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.
E2E only protects data in transit. Unless the pair also encrypted their data at rest, their messages will still be easily accessed in plain text by their cloud backup.
It supports encrypted backups. Plus that adds legal complication of knowing to and getting data from Google/Apple/etc.
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.