Oh, and by the way, check your NAS devices to ensure that they are safe. Disconnect direct Internet access right now, until the devices are patched.
QNAP says that they are vulnerable to this, and urge users to take immediate action. http://www.qnap.com/useng/index.php?lang=en-us&sn=885&c=3036&sc=&n=22457
Apparently, Synology units are not generally affected (interesting…), but nevertheless, they are also coming out with a patch (also interesting…) https://www.synology.com/en-global/support/security/bash_shellshock