| Date | User | Challenge | Score |
| MajorChrysalis | Extended GCD | 20 | |
| Urvi | Diffusion through Permutation | 30 | |
| Urvi | Confusion through Substitution | 25 | |
| coreDumped79 | Modular Inverting | 25 | |
| MajorChrysalis | Greatest Common Divisor | 15 | |
| coreDumped79 | Modular Arithmetic 2 | 20 | |
| Chayala2 | Finding Flags | 2 | |
| coreDumped79 | Modular Arithmetic 1 | 20 | |
| coreDumped79 | Extended GCD | 20 | |
| MajorChrysalis | You either know, XOR you don't | 30 | |
| moaoifff | Greatest Common Divisor | 15 | |
| mormonyaoi | Great Snakes | 3 | |
| MajorChrysalis | Favourite byte | 20 | |
| ANG | Flipping Cookie | 60 | |
| richy | You either know, XOR you don't | 30 | |
| MajorChrysalis | XOR Properties | 15 | |
| Heba_Ajjour | Network Attacks | 5 | |
| richy | Favourite byte | 20 | |
| larpro | ASCII | 5 | |
| devsec1 | Greatest Common Divisor | 15 | |
| Yoshift | Export-grade | 100 | |
| crypto619 | Gotta Go Fast | 40 | |
| RachaelSarah | Bean Counter | 60 | |
| jfs13 | Hex | 5 | |
| mormonyaoi | Finding Flags | 2 | |
| oneor | Modular Square Root | 35 | |
| Yoshift | Parameter Injection | 60 | |
| richy | XOR Properties | 15 | |
| gradale | Base64 | 10 | |
| jfs13 | ASCII | 5 | |
| LevaFes | Bean Counter | 60 | |
| LevaFes | Symmetry | 50 | |
| LevaFes | Flipping Cookie | 60 | |
| LevaFes | ECB CBC WTF | 55 | |
| LevaFes | ECB Oracle | 60 | |
| LevaFes | Passwords as Keys | 50 | |
| LevaFes | Modes of Operation Starter | 15 | |
| LevaFes | Bringing It All Together | 50 | |
| ANG | Bean Counter | 60 | |
| Yoshift | Deriving Symmetric Keys | 40 | |
| LevaFes | Diffusion through Permutation | 30 | |
| LevaFes | Confusion through Substitution | 25 | |
| LevaFes | Round Keys | 20 | |
| LevaFes | Structure of AES | 15 | |
| LevaFes | Resisting Bruteforce | 10 | |
| LevaFes | Keyed Permutations | 5 | |
| LevaFes | Export-grade | 100 | |
| LevaFes | Parameter Injection | 60 | |
| Yoshift | Computing Shared Secrets | 30 | |
| LevaFes | Deriving Symmetric Keys | 40 |
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