Two agents add different functions to same file
Photograph: Chris Haslam
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So, what is end-to-encryption and why is it important? A means of securing up your communication online, end-to-end encryption ensures that only you and your recipient can see your messages. Christianna Silva summarises it for Mashable:
Number (2): Everything in this space must add up to 2. The answer is 1-3, placed horizontally.