| Date | User | Challenge | Score |
| Dubcfrito | Point Negation | 10 | |
| alexandros | Bytes and Big Integers | 10 | |
| jdcaudle | Greatest Common Divisor | 15 | |
| dabayateye | Finding Flags | 2 | |
| Vasileios01 | Generators of Groups | 20 | |
| Vasileios01 | Working with Fields | 10 | |
| B1gBr00klyn | Bytes and Big Integers | 10 | |
| academicWeapon | Base64 | 10 | |
| B1gBr00klyn | Base64 | 10 | |
| arp1t0x | You either know, XOR you don't | 30 | |
| mofloppa | Great Snakes | 3 | |
| jdcaudle | You either know, XOR you don't | 30 | |
| academicWeapon | Hex | 5 | |
| rugolot | Euler's Totient | 20 | |
| B1gBr00klyn | Hex | 5 | |
| mofloppa | Finding Flags | 2 | |
| Dubcfrito | Background Reading | 5 | |
| B1gBr00klyn | ASCII | 5 | |
| Faisal92 | Size and Basis | 15 | |
| Kacebover | Network Attacks | 5 | |
| Kacebover | Great Snakes | 3 | |
| Kacebover | Finding Flags | 2 | |
| VINCRYPTO | Hex | 5 | |
| alexjmead | Structure of AES | 15 | |
| alexandros | Base64 | 10 | |
| rugolot | Public Keys | 15 | |
| alexandros | Hex | 5 | |
| alexandros | ASCII | 5 | |
| dwaeji | Base64 | 10 | |
| vasilismpountos | Private Keys | 20 | |
| B1gBr00klyn | Great Snakes | 3 | |
| vasilismpountos | Euler's Totient | 20 | |
| dwaeji | Hex | 5 | |
| vasilismpountos | Public Keys | 15 | |
| B1gBr00klyn | Finding Flags | 2 | |
| dwaeji | ASCII | 5 | |
| Faisal92 | Vectors | 10 | |
| vasilismpountos | Modular Exponentiation | 10 | |
| alexjmead | Resisting Bruteforce | 10 | |
| alexandros | Network Attacks | 5 | |
| cryptitcrypthat | Hex | 5 | |
| alexjmead | Keyed Permutations | 5 | |
| zaineb1976 | You either know, XOR you don't | 30 | |
| azizsmaoui | Factoring | 15 | |
| anes234 | Efficient Exchange | 50 | |
| Whoagain | Adrien's Signs | 80 | |
| JetJoshi | Base64 | 10 | |
| Whoagain | Modular Square Root | 35 | |
| Whoagain | Legendre Symbol | 35 | |
| ryuya | You either know, XOR you don't | 30 |
You are now level Current level