| Date | User | Challenge | Score |
| AkaashSamson | RSA Decryption | 20 | |
| tagekl | Export-grade | 100 | |
| rax__9906 | Favourite byte | 20 | |
| AkaashSamson | Private Keys | 20 | |
| rahultiw11 | Great Snakes | 3 | |
| Salem777 | Greatest Common Divisor | 15 | |
| Sobex | ASCII | 5 | |
| jablonskim | ECB Oracle | 60 | |
| SHERKO | XOR Starter | 10 | |
| AkaashSamson | Euler's Totient | 20 | |
| Salem777 | You either know, XOR you don't | 30 | |
| tagekl | Parameter Injection | 60 | |
| AkaashSamson | Public Keys | 15 | |
| rax__9906 | XOR Properties | 15 | |
| Sobex | Great Snakes | 3 | |
| AkaashSamson | Modular Exponentiation | 10 | |
| Sobex | Finding Flags | 2 | |
| rahultiw11 | Finding Flags | 2 | |
| rax__9906 | XOR Starter | 10 | |
| tagekl | Deriving Symmetric Keys | 40 | |
| rax__9906 | Bytes and Big Integers | 10 | |
| litgift | Modular Inverting | 25 | |
| SHERKO | Bytes and Big Integers | 10 | |
| rax__9906 | Base64 | 10 | |
| thaggs1066 | Symmetry | 50 | |
| THEX | XOR Starter | 10 | |
| SHERKO | Base64 | 10 | |
| rax__9906 | Hex | 5 | |
| tagekl | Generators of Groups | 20 | |
| jablonskim | Passwords as Keys | 50 | |
| dloop | Diffusion through Permutation | 30 | |
| rax__9906 | ASCII | 5 | |
| Vart | Base64 | 10 | |
| testbb67 | ASCII | 5 | |
| testbb67 | Great Snakes | 3 | |
| jablonskim | Modes of Operation Starter | 15 | |
| rax__9906 | Great Snakes | 3 | |
| SpectreDev | Factoring | 15 | |
| rax__9906 | Finding Flags | 2 | |
| dloop | Confusion through Substitution | 25 | |
| kanellam | Export-grade | 100 | |
| testbb67 | Finding Flags | 2 | |
| m1sterc | Great Snakes | 3 | |
| GirothMitartan | XOR Starter | 10 | |
| m1sterc | Finding Flags | 2 | |
| madlad1 | Quadratic Residues | 25 | |
| THEX | Bytes and Big Integers | 10 | |
| gordianknot | Great Snakes | 3 | |
| dloop | Round Keys | 20 | |
| arun_ks | Greatest Common Divisor | 15 |
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