| Date | User | Challenge | Score |
| LacatusEduard | Flipping Cookie | 60 | |
| sangph2612 | Let's Decrypt | 80 | |
| kjhp02 | Modular Arithmetic 1 | 20 | |
| Cioban_Daniel | Modes of Operation Starter | 15 | |
| AEduard | Symmetry | 50 | |
| 202011156 | Structure of AES | 15 | |
| AEduard | Flipping Cookie | 60 | |
| AEduard | ECB CBC WTF | 55 | |
| AEduard | ECB Oracle | 60 | |
| LacatusEduard | ECB CBC WTF | 55 | |
| kjhp02 | Extended GCD | 20 | |
| LacatusEduard | ECB Oracle | 60 | |
| quq | SSH Keys | 35 | |
| quq | CERTainly not | 30 | |
| Cioban_Daniel | Bringing It All Together | 50 | |
| AEduard | Passwords as Keys | 50 | |
| quq | Privacy-Enhanced Mail? | 25 | |
| 202011156 | Resisting Bruteforce | 10 | |
| sangph2612 | Signing Server | 60 | |
| quq | Modular Inverting | 25 | |
| Iulian_Ciobanu | Diffusion through Permutation | 30 | |
| AEduard | Modes of Operation Starter | 15 | |
| MeowSonic | Static Client 2 | 120 | |
| xinglin | Bytes and Big Integers | 10 | |
| Cioban_Daniel | Diffusion through Permutation | 30 | |
| quq | Modular Arithmetic 2 | 20 | |
| 202011156 | Keyed Permutations | 5 | |
| AEduard | Bringing It All Together | 50 | |
| Iulian_Ciobanu | Confusion through Substitution | 25 | |
| quq | Modular Arithmetic 1 | 20 | |
| AEduard | Diffusion through Permutation | 30 | |
| AEduard | Confusion through Substitution | 25 | |
| quq | Extended GCD | 20 | |
| Courtesyl | Extended GCD | 20 | |
| AEduard | Round Keys | 20 | |
| quq | Greatest Common Divisor | 15 | |
| quq | Lemur XOR | 40 | |
| KwonByeongjun | Bringing It All Together | 50 | |
| AEduard | Structure of AES | 15 | |
| IoanRaresPelea | Diffusion through Permutation | 30 | |
| constantinilie | Symmetry | 50 | |
| Cioban_Daniel | Confusion through Substitution | 25 | |
| constantinilie | Flipping Cookie | 60 | |
| constantinilie | ECB CBC WTF | 55 | |
| xinglin | Base64 | 10 | |
| AEduard | Resisting Bruteforce | 10 | |
| Iulian_Ciobanu | Round Keys | 20 | |
| AEduard | Keyed Permutations | 5 | |
| Cioban_Daniel | Round Keys | 20 | |
| constantinilie | ECB Oracle | 60 |
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