Many years ago I came across an article that investigated the security vulnerabilities of the BeOS.
I have located the article (link below):
http://www.giac.org/paper/gsec/175/security-beos-media-os/100651
Since Haiku is being developed from scratch, I feel now is the best time to address any security related issues and implement them into the operating system. I’m sure some of these issues have been addressed, but would also like further information on what the developers plan going forward in subsequent alpha and beta releases.