| Date | User | Challenge | Score |
| Pranaya | ASCII | 5 | |
| laabedmedsami | Bytes and Big Integers | 10 | |
| dianziyun | Modular Square Root | 35 | |
| shshent | Jack's Birthday Confusion | 30 | |
| shshent | Jack's Birthday Hash | 20 | |
| laabedmedsami | Base64 | 10 | |
| Pranaya | Great Snakes | 3 | |
| Pranaya | Finding Flags | 2 | |
| parameterman | Base64 | 10 | |
| parameterman | Hex | 5 | |
| mej | Working with Fields | 10 | |
| cuccitine | Bytes and Big Integers | 10 | |
| KowalskiVan | Stream of Consciousness | 80 | |
| KowalskiVan | CTRIME | 70 | |
| parameterman | ASCII | 5 | |
| mej | Modulus Inutilis | 50 | |
| shshent | Moving Problems | 150 | |
| parameterman | Great Snakes | 3 | |
| iBitSploit | Resisting Bruteforce | 10 | |
| parameterman | Finding Flags | 2 | |
| mej | Salty | 20 | |
| iBitSploit | Keyed Permutations | 5 | |
| smasher223 | XOR Starter | 10 | |
| Dr_Root | Everything is Big | 70 | |
| AMORAGA1710 | Diffusion through Permutation | 30 | |
| Dr_Root | Modulus Inutilis | 50 | |
| Dr_Root | Salty | 20 | |
| realfeeds | Base64 | 10 | |
| realfeeds | Hex | 5 | |
| realfeeds | ASCII | 5 | |
| realfeeds | Great Snakes | 3 | |
| realfeeds | Finding Flags | 2 | |
| AMORAGA1710 | Confusion through Substitution | 25 | |
| useless | Successive Powers | 60 | |
| mej | Manyprime | 40 | |
| cuccitine | Base64 | 10 | |
| binggangan | SSH Keys | 35 | |
| cuccitine | Hex | 5 | |
| KowalskiVan | Bean Counter | 60 | |
| KowalskiVan | Passwords as Keys | 50 | |
| KowalskiVan | ECB Oracle | 60 | |
| KowalskiVan | Flipping Cookie | 60 | |
| KowalskiVan | Triple DES | 60 | |
| KowalskiVan | Lazy CBC | 60 | |
| KowalskiVan | Symmetry | 50 | |
| KowalskiVan | ECB CBC WTF | 55 | |
| KowalskiVan | Modes of Operation Starter | 15 | |
| tanaji | Euler's Totient | 20 | |
| chikomdapulla | Modular Arithmetic 2 | 20 | |
| Charles_Sloneker | RSA Decryption | 20 |
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