[trumpdong]

If the security community had unlimited resources you wouldn't be able to do very much with computers. Security and usability are opposite ends of a spectrum. Either you can do a lot (usability) or you can do little (security).

[SAI_Peregrinus]

Disagree, availability is part of security. That's why denial of service attacks are a security issue. Bad enough usability is indistinguishable from a DoS attack.