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1.
▲
GCHQ celebrates 80 years of Colossus – GCHQ.GOV.UK
gchq.gov.uk
discuss
2 years ago
vinnyglennon
10 points
2.
▲
The GCHQ Christmas Challenge 2023 – Gchq.gov.uk
gchq.gov.uk
discuss
2 years ago
vinnyglennon
2 points
3.
▲
GCHQ Holiday Puzzle Part 2
5 comments
11 years ago
Praxilla
2 points
4.
▲
GCHQ Christmas Challenge
gchq.gov.uk
4 comments
2 years ago
MrDrDr
15 points
5.
▲
GCHQ Celebrates 80 Years of Colossus
gchq.gov.uk
discuss
2 years ago
rolivercoffee
7 points
6.
▲
The GCHQ Christmas Challenge 2022
gchq.gov.uk
discuss
4 years ago
jmcdowell
7 points
7.
▲
GCHQ director's Xmas Puzzle
gchq.gov.uk
1 comment
11 years ago
DanBC
5 points
8.
▲
GCHQ celebrates 80 years of Colossus (code-breaking computer in WWII)
gchq.gov.uk
discuss
2 years ago
beejiu
5 points
9.
▲
The Turing Challenge
gchq.gov.uk
discuss
5 years ago
deddo
5 points
10.
▲
GCHQ challenges you to crack codes for charity with its first ever Puzzle Book
gchq.gov.uk
discuss
10 years ago
astdb
5 points
11.
▲
The last Enigma Message Decyphered in WWII. GCHQ marks 75th anniv. of VE day
gchq.gov.uk
1 comment
6 years ago
canada_dry
4 points
12.
▲
GCHQ Celebrates 80 Years of Colossus
gchq.gov.uk
discuss
2 years ago
bookofjoe
4 points
13.
▲
The GCHQ Christmas Challenge 2023
gchq.gov.uk
discuss
3 years ago
Sami_Lehtinen
4 points
14.
▲
The Turing Challenge
gchq.gov.uk
discuss
5 years ago
pcrh
4 points
15.
▲
GCHQ Christmas Card – Solve the Crypto Card for Charity
gchq.gov.uk
discuss
11 years ago
haser_au
4 points
16.
▲
The GCHQ Christmas Challenge 2024
gchq.gov.uk
1 comment
2 years ago
dattiimo
3 points
17.
▲
Stroom helps large organisations understand their systems
gchq.gov.uk
1 comment
10 years ago
johnwards
3 points
18.
▲
Raspberry Pi cluster by GCHQ
gchq.gov.uk
discuss
11 years ago
akro19
3 points
19.
▲
GCHQ joins LinkedIn with unique visual puzzle
gchq.gov.uk
discuss
2 years ago
belter
3 points
20.
▲
Alan Turing wartime research papers released by GCHQ
gchq.gov.uk
discuss
14 years ago
michael_dorfman
3 points
21.
▲
The GCHQChristmasChallenge Is Here
gchq.gov.uk
discuss
5 years ago
sphericalgames
3 points
22.
▲
Cryptoy – Explore the fascinating world of cryptography
gchq.gov.uk
discuss
9 years ago
remx
3 points
23.
▲
A Christmas card with a cryptographic twist for charity
gchq.gov.uk
discuss
11 years ago
ramisama
3 points
24.
▲
A Christmas card with a cryptographic twist for charity
gchq.gov.uk
discuss
11 years ago
laurencei
3 points
25.
▲
Solve the cyber secret to have a crack at joining GCHQ’s code-breakers
gchq.gov.uk
2 comments
13 years ago
teamgb
2 points
26.
▲
A Note on 'Non-Secret Encryption'
gchq.gov.uk
1 comment
10 years ago
aburan28
2 points
27.
▲
Two days left, No one's cracked GCHQ challenge
gchq.gov.uk
1 comment
10 years ago
marklittlewood
2 points
28.
▲
Cryptoy – explore the fascinating world of cryptography
gchq.gov.uk
discuss
12 years ago
sambf
2 points
29.
▲
GCHQ Cyber Security Challenge game
gchq.gov.uk
discuss
13 years ago
sjtgraham
2 points
30.
▲
The GCHQ Christmas Challenge 2023
gchq.gov.uk
discuss
3 years ago
austinallegro
2 points
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