"...For several weeks, many users felt they were being kept in the dark. And when Apple finally issued a fix -- two actually, a couple of weeks apart -- users complained they had no idea of what was being fixed or how. Descriptions of the updates were scant, bordering on meaningless.
But security is very important to Apple. It's one of the key perceived differences between OS X and Windows, which is constantly battling viruses, worms and spyware.
...So this week Apple executives worked overtime talking to the press. The message is that Apple takes security very, very seriously, and the company has learned an important lesson in communicating about security issues with its customers."
They've also started a security website.
Note: Apple's OS X isn't Open Source, but a lot of hackers use it so....