In this era where almost everything is online, online security is a major concern. These days, a lot of web servers, web-connected devices, and services use Linux as their platform. Most versions of Linux use the Unix bash shell, so the Shellshock vulnerability can affect a huge number of websites and web servers.

Shellshock was discovered on September 12, 2014, and it affects all the distributions of Linux using a Bash shell. The Shellshock vulnerability makes it possible to execute commands remotely using environment variables.

In this free downloadable chapter from Packt Publishing’s Linux Security Cookbook, discover more about the Shellshock vulnerability and how to patch and deal with Bash vulnerabilities for better Linux security.

Plus we’ve teamed up with Packt Publishing to give you the chance to win this must-have security bundle of ebooks:

Practical Linux Security Cookbook
Learning Python Penetration Testing
Kali Linux Wireless Penetration Testing Beginner’s Guide
Learning Linux Shell Scripting
Learning Python for Forensics

To be in with a chance of winning, just drop us an email to linuxuser@imagine-publishing.co.uk with the subject line “Secure my system” and tell us your name and email address. The closing date for entry is 28th July 2016.

Imagine Publishing has the right to substitute the prize for a similar item of equal or higher value. Employees of Imagine Publishing (including freelancers), Packt Publishing, their relatives or any agents are not eligible to enter. The editor’s decision is final and no correspondence will be entered into. Prizes cannot be exchanged for cash. Full terms and conditions are available on request.
From time to time, Imagine Publishing or its agents may send you related material or special offers. If you do not wish to receive this, please state clearly on your entry.