The communications headquarters of the British government has joined Twitter.
The GCHQ is the first UK intelligence agency to provide news, updates, and opinions through the social media site.
Their first tweet - "Hello, world" - is one of the first programs agents learn to write in coding languages such as C, Python, Java, PHP, and Ruby.
GCHQ says getting "Hello, world" to appear on a screen is a "gentle introduction to coding, and as a technical organisation with computing at its core, it resonated with many of our staff who have learnt to program during their career".
Andrew Pike, the director of communications at GCHQ, said: "In joining social media GCHQ can use its own voice to talk directly about the important work we do in keeping Britain safe".
"We want GCHQ to be more accessible and to help the public understand more about our work. We also want to reach out to the technical community and add our voice to social media conversations about technology, maths, cyber security, and other topics where we have a view".
The agency will be using Twitter to talk about its history, mission outcomes, languages, maths, cyber security, technology and innovation.
It will also post job opportunities as well as publications, news, blogs, and opinion pieces.
The agency says it discovered "a huge appetite for more brain teasers" following a Christmas card puzzle that was posted last year.
