| Date | User | Challenge | Score |
| sharkg07 | Finding Flags | 2 | |
| Delight18 | RSA Decryption | 20 | |
| lelouch5920 | You either know, XOR you don't | 30 | |
| Delight18 | Private Keys | 20 | |
| Delight18 | Euler's Totient | 20 | |
| Delight18 | Public Keys | 15 | |
| thedarkliight | Favourite byte | 20 | |
| kshah03 | Finding Flags | 2 | |
| Delight18 | Modular Exponentiation | 10 | |
| krishramani27 | Finding Flags | 2 | |
| unc_miko | Bytes and Big Integers | 10 | |
| Kanzen7 | Bytes and Big Integers | 10 | |
| catninja527 | Base64 | 10 | |
| catninja527 | Hex | 5 | |
| thedarkliight | XOR Properties | 15 | |
| zirajs | Quadratic Residues | 25 | |
| perezident | XOR Starter | 10 | |
| catninja527 | ASCII | 5 | |
| TuLong4 | Finding Flags | 2 | |
| unc_miko | Base64 | 10 | |
| zirajs | Modular Inverting | 25 | |
| zirajs | Modular Arithmetic 2 | 20 | |
| Kanzen7 | Network Attacks | 5 | |
| zirajs | Modular Arithmetic 1 | 20 | |
| unc_miko | Hex | 5 | |
| catninja527 | Great Snakes | 3 | |
| OptimusP | Network Attacks | 5 | |
| bramsze | Structure of AES | 15 | |
| Akiri | You either know, XOR you don't | 30 | |
| guyu | Lemur XOR | 40 | |
| redishcar | You either know, XOR you don't | 30 | |
| unc_miko | ASCII | 5 | |
| jam3s | Bean Counter | 60 | |
| Kritio | Computing Shared Secrets | 30 | |
| Akiri | Favourite byte | 20 | |
| perezident | Bytes and Big Integers | 10 | |
| Kritio | Computing Public Values | 25 | |
| lelouch5920 | Favourite byte | 20 | |
| Kritio | Generators of Groups | 20 | |
| Kritio | Working with Fields | 10 | |
| Kritio | Modulus Inutilis | 50 | |
| redishcar | Favourite byte | 20 | |
| Kritio | Salty | 20 | |
| Akiri | XOR Properties | 15 | |
| ashley_ecalnir | Bytes and Big Integers | 10 | |
| ashley_ecalnir | Base64 | 10 | |
| dperrin | ProSign 3 | 100 | |
| lelouch5920 | XOR Properties | 15 | |
| OptimusP | Great Snakes | 3 | |
| perezident | Base64 | 10 |
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