GCHQ's annual brainteaser comes in the form of the agency's Christmas card, sent by the intelligence organisation's director ...

GCHQ’s Christmas puzzle contains hidden clues as an extra challenge for sleuths for the first time. The intelligence security ...

Challenge, a seasonal greeting card that doubles as a set of fiendishly difficult puzzles, has been an annual tradition since 2015.

The annual brainteaser aims to tickle the neurons of those hoping to work in intelligence, and comes in the form of a ...

This year’s Christmas card from the UK spy agency features a map of the UK and Northern Ireland, reflecting a ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

If you always dreamt of being a spy, now is your chance to show off your detective skills. UK’s national security agency has ...

As the UK nears the end of a year full of twists and surprise, the nation’s intelligence and security agency is keeping up tradition by releasing its annual Christmas card puzzle. The GCHQ ...

Challenge includes puzzles meant to engage young people in complex problem-solving. The aim is to inspire interest in STEM ...

What do gift tags, candy canes and several layers of hardened code have in common? They are all elements of an annual brainteaser for UK school children set by the nation's spy agency. Ensuring ...

Pupils are being challenged to put their codebreaking skills to the test in a festive brainteaser set by the UK's intelligence agency GCHQ. The puzzle features on a Christmas card sent by Sir ...

Government Communications Headquarters (GCHQ) is one of the world's leading intelligence, cyber and security agencies. Each year the agency releases a Christmas challenge, in the form of a card, which ...