Apple announced the availability of OS X Mavericks on Tuesday, and for the first time, the premium OS is coming completely free. The company has dropped the price on its desktop operating system, making room for cheaper PCs, as the days of spending hundreds of dollars to get the most out of your computer are gone.

And the release OS X Mavericks, also brings Flash Player now protected by an OS X App Sandbox.

Apple Mac suffered many security breaches in the past owing to vulnerabilities associated with Flash plug-in, now with Flash Player sandboxed under Safari in Mac OS X, means better restriction on the ability of attackers to exploit any vulnerabilities in the browser plug-in.

The sandbox also limits Flash Player’s local connections to device resources and inter-process communication (IPC) channels, which in turn limits Flash Player’s networking privileges to prevent unnecessary connection capabilities. And the end point is that Flash Player’s capabilities to read and write files will be limited to only those locations it needs to function properly.

Mac OS X Mavericks is available as a free download from the Mac App Store.