Apparently in the latest hacking contests, Ubuntu is the energizer bunny that just keeps on going, and going, and going.

Where Vista failed (an undisclosed Flash vulnerability), and the Macbook with Safari failed (again, undisclosed vulnerability), Ubuntu kept going and going.

Read more here: Flash flaw leads to Vista laptop's fall

It's a short article, so I'm not clipping it here.  Read down just a bit and you'll see the note about the Macbook failing after the second day of the testing.  (The base operating system was secure enough, but the additional applications on the system -- in that case Safari -- was fair game and failed the test leaving the system vulnerable).  It took until the third day of the testing when the rules were relaxed a bit more for the Vista system to succumb.  In that case, it was a Flash vulnerability that left the system open enough for the hackers to succeed.

At the end of the test period, the last man standing, still not having been compromised was the Ubuntu system.

I'm a bit surprised at the Mac falling first, and would bet that quite a few Mac zealots would never believe that their favored system was the first to fall.  That Vista eventually fell didn't surprise me much, but the fact that it took longer to find an entry point was somewhat surprising.  I guess some credit should be given to the Vista developers and designers for taking care of business in the security area.  That shows great improvement over earlier Windows operating systems where security was not as evident, nor as apparently important to the developers who worked on creating the systems.  Windows 2000 and Windows XP both have had so many critical updates and patches released to fix security flaws that most people wouldn't be able to count the number without the aid of a calculator.

Nice to know that the open source community (behind Ubuntu) has done such a good job of making the product secure.  Good work guys and gals.