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WhatsApp and Signal messages at risk of surveillance following EncroChat ruling, court hears | Computer Weekly
(www.computerweekly.com)
This is a most excellent place for technology news and articles.
With a warrant they could probably force signal/whatsapp to inject Malware into their apps to spy on users.
Don't know how possible it is with signal and their reproducible builds. They would need to add this to the source code of the app.
Could they though, I thought signal would just leave the market