| Date | User | Challenge | Score |
| Kanzen7 | ASCII | 5 | |
| Kanzen7 | Great Snakes | 3 | |
| JillP | Great Snakes | 3 | |
| Kanzen7 | Finding Flags | 2 | |
| JillP | Finding Flags | 2 | |
| fatalfields | Crossed Wires | 100 | |
| ScaRed | Deriving Symmetric Keys | 40 | |
| ScaRed | Computing Shared Secrets | 30 | |
| resk | Great Snakes | 3 | |
| Fksman | Diffusion through Permutation | 30 | |
| Siphedrion | Script Kiddie | 70 | |
| ScaRed | Computing Public Values | 25 | |
| ScaRed | Modulus Inutilis | 50 | |
| Fksman | Confusion through Substitution | 25 | |
| Kospatt | Successive Powers | 60 | |
| ScaRed | Bean Counter | 60 | |
| ScaRed | Symmetry | 50 | |
| cole | You either know, XOR you don't | 30 | |
| ScaRed | Flipping Cookie | 60 | |
| FTsev | Quadratic Residues | 25 | |
| Konstantinos_Ch | Successive Powers | 60 | |
| ScaRed | ECB CBC WTF | 55 | |
| Fksman | Round Keys | 20 | |
| ScaRed | ECB Oracle | 60 | |
| tera | Smooth Criminal | 60 | |
| cole | Favourite byte | 20 | |
| Konstantinos_Ch | What's a Lattice? | 40 | |
| cole | XOR Properties | 15 | |
| cole | XOR Starter | 10 | |
| Konstantinos_Ch | Gram Schmidt | 30 | |
| Fksman | Structure of AES | 15 | |
| Konstantinos_Ch | Size and Basis | 15 | |
| kamilkaminski02 | Chinese Remainder Theorem | 40 | |
| veganjay | Greatest Common Divisor | 15 | |
| cole | Encoding Challenge | 40 | |
| veganjay | Lemur XOR | 40 | |
| ZOMBIE_ALIEN_420 | Bringing It All Together | 50 | |
| veganjay | Encoding Challenge | 40 | |
| cole | Bytes and Big Integers | 10 | |
| Fronczyk_Mateusz | Parameter Injection | 60 | |
| tera | Montgomery's Ladder | 40 | |
| cole | Base64 | 10 | |
| Abdo_Sellem | XOR Starter | 10 | |
| 0xMRvirus | Greatest Common Divisor | 15 | |
| jarinios | Modular Binomials | 80 | |
| MisterOnions | Null or Never | 100 | |
| mrabet | Base64 | 10 | |
| Amnay | ASCII | 5 | |
| karoldus | Legendre Symbol | 35 | |
| 0xMRvirus | Secure Protocols | 5 |
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