Changes

* [https://wiki.mozilla.org/Security/Sandbox/Specifics Platform Specifics]* [https://wiki.mozilla.org/Security/Sandbox/Deny_Filesystem_Access File Restrictions Bug Research]* [https://wiki.mozilla.org/Sandbox/OS_X_Rule_Set OSX Filter Rule Set]* [https://wiki.mozilla.org/Security/Sandbox/Hardening Hardening Research]* [https://wiki.mozilla.org/Security/Sandbox/Process_model Process Model]