German police read Signal, Telegram, WhatsApp messages without breaking encryption
Cybernews
German police read WhatsApp messages without cracking encryption
45 days of Signal history may be exposed by German police messaging surveillance using linked devices, Netzpolitik says. Read what the documents reveal
Netzpoltik details that police are able to gain access in this way either through physical access to someone’s phone or by intercepting verification codes via a state-sanctioned phishing attack or intercepting SMS messages via telephone surveillance
they did not disclose how have they done it for signal, and than mentioning linked devices. it could be that they got access to a linked computer of the user, and copied messages that way. there is not much signal could do against this. afaik the app already uses the system keystore to store api keys, and to partially encrypt its data, but the system keystore is often not so strong because its automatically unlocked