| Date | User | Challenge | Score |
| grapesea | Salty | 20 | |
| Liamfabr | Favourite byte | 20 | |
| Xaelis | Extended GCD | 20 | |
| layth_j | Bytes and Big Integers | 10 | |
| omricohen | Greatest Common Divisor | 15 | |
| phanta1313 | Modular Arithmetic 1 | 20 | |
| orisharim | Greatest Common Divisor | 15 | |
| absimaman | Network Attacks | 5 | |
| vsriramv | Script Kiddie | 70 | |
| omricohen | Lemur XOR | 40 | |
| dovgopoly | Size and Basis | 15 | |
| toto123456 | Symmetry | 50 | |
| louis25 | What's a Lattice? | 40 | |
| louis25 | Gram Schmidt | 30 | |
| louis25 | Gaussian Reduction | 50 | |
| dungcngo | Bytes and Big Integers | 10 | |
| louis25 | Size and Basis | 15 | |
| louis25 | Vectors | 10 | |
| DeFaDeDe | You either know, XOR you don't | 30 | |
| omricohen | You either know, XOR you don't | 30 | |
| Liamfabr | XOR Properties | 15 | |
| 01169322 | RSA Signatures | 25 | |
| orisharim | Lemur XOR | 40 | |
| vsriramv | Static Client 2 | 120 | |
| omricohen | Favourite byte | 20 | |
| Despoina | Factoring | 15 | |
| omricohen | XOR Properties | 15 | |
| CongMinh | Background Reading | 5 | |
| orisharim | You either know, XOR you don't | 30 | |
| 01169322 | RSA Decryption | 20 | |
| Par2025 | RSA Signatures | 25 | |
| PanteliaEu | Quadratic Residues | 25 | |
| 01169322 | Private Keys | 20 | |
| DeFaDeDe | Favourite byte | 20 | |
| omricohen | XOR Starter | 10 | |
| Liamfabr | XOR Starter | 10 | |
| S1RJAM3S | Special Soundness | 25 | |
| omricohen | Encoding Challenge | 40 | |
| 01169322 | Euler's Totient | 20 | |
| osihlovec | Hash Stuffing | 50 | |
| Xaelis | Greatest Common Divisor | 15 | |
| rachellthedinh | Adrien's Signs | 80 | |
| I6nat1us_2011 | Salty | 20 | |
| 01169322 | Public Keys | 15 | |
| DeFaDeDe | XOR Properties | 15 | |
| Cvetaca | Lemur XOR | 40 | |
| louis25 | Decrypting TLS 1.3 | 35 | |
| 10ball | Finding Flags | 2 | |
| Mage | Backpack Cryptography | 120 | |
| 01169322 | Modular Exponentiation | 10 |
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