Well it seems that there is a nasty that has recently hit the wire about something being called shellshock.

There is a pretty good article about it at http://www.troyhunt.com/2014/09/everything-you-need-to-know-about.html

You dont think it affects you?
Think again and think carefuly.

Are you connected to the internet by a modem that is provided by your ISP? Then there is a good chance that it runs some form of *nx type shell under the hood and therefore you could be vulnerable.

Read over the linked article.

Thanks to a collegue of mine, Ian Barry, for bringing this to my attention.

The short version, which is overly simplified is ….
If you have any device that runs a bash shell then you are likly vulnerable.
Most internet enabled devices that are not windows have a chance of running a shell of some sort, not necessarily bash, but do you want to take that chance?
Don’t be nieve and think that you wouldnt be targeted because you a small/home user. You to have valuable information protect it.

Disclaimer: Just because windows does not natively run bash, it can be user installed.