ProtonMail adds encrypted contacts manager, which uses digital signatures to check data integrity, to its iOS and Android apps (Paul Sawers/VentureBeat)

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Paul Sawers / VentureBeat:
ProtonMail adds encrypted contacts manager, which uses digital signatures to check data integrity, to its iOS and Android apps  —  Encrypted email provider ProtonMail has expanded its encrypted contacts feature to its mobile app on Android an iOS.  —  The Swiss company first introduced encrypted contacts …