The game is part of an online campaign on Facebook and Twitter, where potential recruits are sent to a website that says: "Can you crack it?". Those who can successfully solve the puzzle are reportedly sent to the GCHW website and are given the chance to apply for a job.
Within hours of the code going viral, it was reported that a number of people solved the puzzle by noon on Thursday.
Players have until midnight on December 12, 2011, to solve the code on that page, which consists of jumbled up columns of letters and numbers and find a keyword that takes them to the next step.
"Code cracking skills are vital to secure the very best talent and to support the GCHQ mission in its fight against cyber threats," a GCHQ spokesman said.
The reason for advertising on social media forums, according to the spokesman, was the its target audience is not typically attracted to traditional advertising methods, and may not be aware of such job opportunities at all.
"Traditionally, cyber specialists enter the organisation as graduates. However, with the threats to information and computer technology constantly evolving, it is essential that GCHQ allows candidates who may be self taught, but have a keen interest in code breaking and ethical hacking, to enter the recruitment route too," he added.
The firm is reportedly hoping to hire 35 spies over the next few months. Those interested have another eight days to work on the challenge set by GCHW, provided they are British citizens and have previously not hacked illegally.
Concerns have already been floating around regarding the threat of cyber-attacks after William Hague, the Foreign Secretary, claimed there were more than 600 "malicious" attacks on British government systems every day.
Let us know if you had a go at the puzzle and succeeded through the comments box or via Twitter and Facebook.
Via: The Telegraph