The Signal App - suddenly billed as the panacea to all your digital encryption woes. Now that end-to-end...whatever is ALL the rage, everyone’s downloading it. But before you persuade your grandad that it’s the best thing since sliced bread, you might want to check out its origins. Here’s a hint, there may have been some involvement from none other than the US government. Don’t worry, Polly Boiko can explain.

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