So far this month they have found two vulnerabilities in the software giant's operating system. But, former Apple employee Landon Fuller has set up an unofficial scheme to fix the flaws.
The project has discovered a shortcoming in Apple's QuickTime Version 7.1.3 media player that could lead to a compromised system.
It also found a bug in the VLC function, a Mac version of the free video software made by VideoLAN that can be exploited by hackers to take control of an affected system, according to an advisory on the MoAB site.
However, Fuller has already released patches for these two vulnerabilities.
"If I have time I will attempt to patch the other vulnerabilities, one a day, until the month is out," he said on his blog. "Part brain exercise, part public service, I have created a runtime fix for the first issue using Application Enhancer."
Fuller asked for help in fixing any other bugs soon to be published by the project. "Please feel free to send me patches or other information. If there is enough interest, I will fire up a mailing list," he said.
The project revealed a third vulnerability yesterday. However, the bug is not new and is a different way of exploiting a known flaw in QuickTime, used by hackers to spread a worm in MySpace last month.
The vulnerability can be used in a cross-zone scripting attack, which could allow malicious users to remotely execute arbitrary code on the user's computer, said the researchers in a MoAB statement.
Apple has yet to release an official statement on the month-long project.