The American Cryptogram Association (ACA) is a non-profit organization dedicated to promoting the hobby and art of cryptanalysis -- that is, learning to break ciphers.
News
2024 ACA Cipher Contest Winners:
COMPUTER SOLVING DIVISION
1. DANEEL
2. XAMAN EK
3. SUSSI
PAPER/PENCIL DIVISION
1. DARING FLAIR
2. LATIN DUDE
3. DONALD DUCK
NOVICE DIVISION
1. BLUESTORMINATOR
2. CEREDWYN
3. WIRMZ
ACA SWAG
Browse some of the merchandise available in the ACA Swag Shop under the “About” pull down tab or click the link below:
