olemus
tõrketurvaline on süsteem, mis
langeb mingi oma osa tõrke korral välja,
kuid ei kahjusta turvalisust

RFC 4949:
a mode of termination of system functions that prevents loss
of secure state when a failure occurs or is detected in the system
(but the failure still might cause damage to some system resource or system entity)

ülevaateid
https://www.getkisi.com/blog/fail-safe-vs-fail-secure

https://us.allegion.com/content/dam/allegion-us-2/web-documents-2/Article/Allegion_Fail_Safe_Fail_Secure_Article_112140.pdf

https://people.inf.ethz.ch/basin/pubs/failsecure-ccs14.pdf

vt ka
- tõrkekindel
- tõrkemahe