| Date | User | Challenge | Score |
| motebang_404 | Base64 | 10 | |
| Angry_Cat | You either know, XOR you don't | 30 | |
| UsuziLi | Finding Flags | 2 | |
| xeneon | ASCII | 5 | |
| W0lf_19S | RSA Decryption | 20 | |
| motebang_404 | Hex | 5 | |
| xeneon | Great Snakes | 3 | |
| motebang_404 | ASCII | 5 | |
| motebang_404 | Great Snakes | 3 | |
| W0lf_19S | Private Keys | 20 | |
| W0lf_19S | Euler's Totient | 20 | |
| Beru | Bean Counter | 60 | |
| motebang_404 | Finding Flags | 2 | |
| Beru | Symmetry | 50 | |
| Beru | Flipping Cookie | 60 | |
| navoos_kael | Flipping Cookie | 60 | |
| navoos_kael | ECB CBC WTF | 55 | |
| dirio | Modular Inverting | 25 | |
| ys512 | Resisting Bruteforce | 10 | |
| SavvyDevil | You either know, XOR you don't | 30 | |
| Cyberstudent | Base64 | 10 | |
| Deniel | Bytes and Big Integers | 10 | |
| SavvyDevil | Favourite byte | 20 | |
| LgtgoaDgctcoa | Finding Flags | 2 | |
| mcsec | Greatest Common Divisor | 15 | |
| Deniel | Base64 | 10 | |
| Deniel | Hex | 5 | |
| MishellyHerrera | Smooth Criminal | 60 | |
| Deniel | ASCII | 5 | |
| Deniel | Great Snakes | 3 | |
| Deniel | Finding Flags | 2 | |
| 756TrollerLujanC | Export-grade | 100 | |
| 756TrollerLujanC | Parameter Injection | 60 | |
| SavvyDevil | XOR Properties | 15 | |
| 756TrollerLujanC | Deriving Symmetric Keys | 40 | |
| 756TrollerLujanC | Computing Shared Secrets | 30 | |
| 756TrollerLujanC | Computing Public Values | 25 | |
| 756TrollerLujanC | Generators of Groups | 20 | |
| 4kT | Modular Arithmetic 1 | 20 | |
| 4kT | Extended GCD | 20 | |
| 4kT | Greatest Common Divisor | 15 | |
| sidderton57 | Bytes and Big Integers | 10 | |
| mariakorotkova | Modular Square Root | 35 | |
| mariakorotkova | Legendre Symbol | 35 | |
| sidderton57 | Base64 | 10 | |
| givvl | Modular Square Root | 35 | |
| parismcv | Modular Arithmetic 1 | 20 | |
| sidderton57 | Hex | 5 | |
| parismcv | Extended GCD | 20 | |
| harish | You either know, XOR you don't | 30 |
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