links

https://www.nist.gov/cybersecurity

https://www.nccoe.nist.gov/sites/default/files/2022-03/patching-nist-sp-1800-31b-final.pdf

https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-40r4.pdf

talk about random, here's some discussion of random:

https://github.com/openwrt/openwrt/issues/7864

more random

https://access.redhat.com/solutions/4303761

if you are not familiar with currency, might want to check this link, since there might be counterfeit money

involved in some e-commerce transactions.

https://www.uscurrency.gov/denominations/100