Everyone is hopefully aware that computer security is a huge issue these days. Everyone should be vigilant in protecting their systems, personal information, and data. Shellshock is the latest large security vulnerability that is affecting machines running Unix or Linux (including Mac OSX, and Android) based operating systems. Shellshock is an exploit in which attackers can gain control of your system by exploiting the Bash shell. It basically allows the attacker to embed malicious code in an HTTP header utilizing Bash through Java, Python, and even PHP. Shellshock differs from Heartbleed in that it is much easier to execute. It is suggested that users ensure their systems are up to date with the latest patches, and avoid unsecured web sites. Windows users are not affected unless they are using Cygwin.