An anonymous blogger writes critical, heavily documented posts on security claims, software history and technology myths, including OpenBSD, Steve Gibson and browser tabs.
Commenters cite it for a contrasting view of OpenBSD's security and for documentation that Opera did not invent tabbed browsing.
Thank you for a comprehensive answer. I do not think that one vulnerability in 8+ years proofs insecurity of QubesOS (by the way, it was found by their developers). OpenBSD is not free from kernel vulnerabilities on such a long time scale. Security through correctness never works, because people are not ideal. (Xen developers are also trying to decrease the code base and make sure the code is as correct as possible.) The only "silver bullet" is defense in depth [0], i.e., trying everything you can.
I heard [1] that OpenBSD is concentrated on the security of the kernel too much, ignoring the isolation of applications. However, most frequently, attacks come through applications. And this is exactly the point of QubesOS: to isolate the applications as much as possible.
You might also be interested in a comparison between different approaches to security [2].
[0] https://en.wikipedia.org/wiki/Defense_in_depth_(computing)
[1] https://allthatiswrong.wordpress.com/2010/01/20/the-insecurity-of-openbsd/
[2] https://theinvisiblethings.blogspot.de/2008/09/three-approaches-to-computer-security.html
That's not right. Opera had tabs in version 4, released in early 2000.
Some people apparently think tabs has to be drag-and-droppable, which Opera had in 2003, in order to be called tabs:
https://allthatiswrong.wordpress.com/2011/01/14/opera-did-not-invent-tabbed-browsing/
The last time I saw a Steve Gibson discussion here, I bookmarked a few good links.
http://attrition.org/errata/charlatan/steve_gibson/
http://radsoft.net/news/roundups/grc/
http://allthatiswrong.wordpress.com/2009/10/11/steve-gibson-is-a-fraud/
I'll leave this link here as offering a contrasting view of openbsd's security posture, and talks about an orthogonal set of security features: http://allthatiswrong.wordpress.com/2010/01/20/the-insecurity-of-openbsd/
On the subject of OpenBSD's approach to security, check this out: http://allthatiswrong.wordpress.com/2010/01/20/the-insecurity-of-openbsd/
The title is a little provocative, but the article is really worth it.
https://allthatiswrong.wordpress.com/2009/10/11/steve-gibson-is-a-fraud/
http://attrition.org/errata/charlatan/steve_gibson/
https://web.archive.org/web/20070622061544/http://www.grcsucks.com/