| Date | User | Challenge | Score |
| Assel | Network Attacks | 5 | |
| zhasulan15243 | Stream of Consciousness | 80 | |
| zhasulan15243 | Logon Zero | 80 | |
| zhasulan15243 | CTRIME | 70 | |
| zhasulan15243 | Bean Counter | 60 | |
| zhasulan15243 | Symmetry | 50 | |
| zhasulan15243 | Triple DES | 60 | |
| zhasulan15243 | Lazy CBC | 60 | |
| zhasulan15243 | Flipping Cookie | 60 | |
| Jinx | Diffusion through Permutation | 30 | |
| akkult | Hex | 5 | |
| Jinx | Confusion through Substitution | 25 | |
| akkult | ASCII | 5 | |
| Dxnzii | Modular Exponentiation | 10 | |
| RudenShtanger | Keyed Permutations | 5 | |
| akkult | Great Snakes | 3 | |
| m1las | Modular Arithmetic 1 | 20 | |
| Jinx | Round Keys | 20 | |
| akkult | Finding Flags | 2 | |
| m1las | Extended GCD | 20 | |
| dcosmayhem | Resisting Bruteforce | 10 | |
| Jinx | Structure of AES | 15 | |
| Jinx | Transparency | 50 | |
| PanagiotisK | Structure of AES | 15 | |
| Jinx | SSH Keys | 35 | |
| VISAS_STARFROST | Efficient Exchange | 50 | |
| Jinx | CERTainly not | 30 | |
| Jinx | Extended GCD | 20 | |
| m1las | Greatest Common Divisor | 15 | |
| Jinx | Modular Inverting | 25 | |
| Jinx | Modular Arithmetic 2 | 20 | |
| VISAS_STARFROST | Curves and Logs | 40 | |
| dcosmayhem | Keyed Permutations | 5 | |
| Jinx | Modular Arithmetic 1 | 20 | |
| m1las | Network Attacks | 5 | |
| dcosmayhem | Extended GCD | 20 | |
| Jinx | Lemur XOR | 40 | |
| m1las | You either know, XOR you don't | 30 | |
| kt010724 | Privacy-Enhanced Mail? | 25 | |
| shokapikfort | Script Kiddie | 70 | |
| ioann_ivan | Finding Flags | 2 | |
| m1las | Favourite byte | 20 | |
| adios | Proofs of Knowledge | 20 | |
| kt010724 | Modular Inverting | 25 | |
| m1las | XOR Properties | 15 | |
| Jinx | You either know, XOR you don't | 30 | |
| QwQll | RSA Signatures | 25 | |
| hieuhacker | Legendre Symbol | 35 | |
| kt010724 | Modular Arithmetic 2 | 20 | |
| Cyryz | You either know, XOR you don't | 30 |
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