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Edit a Scenario Task: I want to be certain of the recipient's identity (and vice versa)
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Description:
When sending an email, it is incredibly easy to fake (or "spoof") one's email address. For example, try sending yourself an email with a made up identity from https://emkei.cz In order to be certain of each other's email identity the message needs to be signed cryptographically. You can [[I want to learn about digital signatures | do this yourself]] or learn about existing authentication methods used by some email providers.
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