Signal’s Evolution


The encryption app is putting a $50 million infusion from WhatsApp cofounder Brian Acton to good use, building out features to help it go mainstream

Marlinspike has always talked about making encrypted communications easy enough for anyone to use. The difference, today, is that Signal is finally reaching that mass audience it was always been intended for—not just the privacy diehards, activists, and cybersecurity nerds that formed its core user base for years—thanks in part to a concerted effort to make the app more accessible and appealing to the mainstream.

That new phase in Signal’s evolution began two years ago this month. That’s when WhatsApp cofounder Brian Acton, a few months removed from leaving the app he built amid post-acquisition clashes with Facebook management, injected $50 million into Marlinspike’s end-to-end encrypted messaging project. Acton also joined the newly created Signal Foundation as executive chairman. The pairing up made sense; WhatsApp had used Signal’s open source protocol to encrypt all WhatsApp communications end-to-end by default, and Acton had grown disaffected with what he saw as Facebook’s attempts to erode WhatsApp’s privacy.

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