When you use Terminal in 10.3 and 10.4, you’re probably using the bash shell—it’s the default, unless you’re using an upgrade install that was previously using tcsh.

Windows 10’s Anniversary Update is now stable, and with it comes the Bash shell developers were so excited about when Microsoft announced it. If you’re using an up-to-date Windows 10 system ...

And since Bash shell is borderline ubiquitous, a vast swath of devices are vulnerable to Shellshock: Macs, Linux systems, routers, web servers, “Internet of Things” gizmos, you name it.