olemus
süsteemi nõrkuste vähendamine
= reducing the security vulnerabilities

ülevaateid
https://techterms.com/definition/systemhardening

https://en.wikipedia.org/wiki/Hardening_(computing)

https://www.beyondtrust.com/resources/glossary/systems-hardening

https://www.trentonsystems.com/blog/system-hardening-overview

https://www.cyber.gov.au/acsc/view-all-content/advice/guidelines-system-hardening

https://www.sanog.org/resources/sanog35/SANOG35-Tutorial-Risk-Elimination-by-System-Hardening.pdf