[kgarten]

How do I know that this advice is useful and does not put me in danger?

Example: NSA recommends to use RSA encryption.

https://www.theverge.com/2013/12/20/5231006/nsa-paid-10-mill...

[m1keil]

You don't use this guide as a bible but take it into account and compare with other common security advice in the field. If you get similar results it most likely a good list of advice.

[jdubs]

This isn't for regular people, this is telling third parties what they need, in order for them to try to sell something to the nsa.