olemus
Webopedia:
a group of employees focused on preventing & detecting cyber attacks

ISACA Glossary:
inimene, kes on võrgu kaitsekihina tegutsemiseks
koolitatud ja teadvustatud
= a person prepared to act as a network layer of defense throug heducation and awareness

ülevaateid
https://www.getthreatready.com/three-key-elements-building-effective-human-firewall/

https://www.laninfotech.com/human-firewall/

https://www.cybersecurity-review.com/articles/the-human-firewall-the-human-side-of-cyber-security/