Update to emphasize security risks and elements

What does this MR do and why?

Describe in detail what your merge request does and why.

Increase end user security awareness by emphasizing the security risks and strengths associated with public-key cryptography, which SSH uses.

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None required, text only update

How to set up and validate locally

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MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.