| Date | User | Challenge | Score |
| neoxquick | Lazy CBC | 60 | |
| subhashanapa | Favourite byte | 20 | |
| subhashanapa | XOR Properties | 15 | |
| Wojtek_Ziel | ASCII | 5 | |
| sean9892 | Common Ground | 75 | |
| subhashanapa | XOR Starter | 10 | |
| sealmove | Triple DES | 60 | |
| paxel | ECB Oracle | 60 | |
| subhashanapa | Bytes and Big Integers | 10 | |
| Dhruvshukla | Private Keys | 20 | |
| subhashanapa | Base64 | 10 | |
| alright | Manyprime | 40 | |
| subhashanapa | Hex | 5 | |
| 25521051 | Greatest Common Divisor | 15 | |
| miaoler | Manyprime | 40 | |
| subhashanapa | ASCII | 5 | |
| subhashanapa | Great Snakes | 3 | |
| azberjibiou | Resisting Bruteforce | 10 | |
| Zuzix | Transparency | 50 | |
| a18 | You either know, XOR you don't | 30 | |
| kosa4416 | XOR Starter | 10 | |
| subhashanapa | Finding Flags | 2 | |
| Dhruvshukla | Public Keys | 15 | |
| azberjibiou | Keyed Permutations | 5 | |
| nous | An Exceptional Twisted Mind | 125 | |
| Anubis1 | Euler's Totient | 20 | |
| sundul969 | Gotta Go Fast | 40 | |
| LightYagami_1098 | Greatest Common Divisor | 15 | |
| neoxquick | ECB Oracle | 60 | |
| nous | Twin Keys | 100 | |
| NuC0co | Logon Zero | 80 | |
| Anubis1 | Public Keys | 15 | |
| miaoler | Monoprime | 30 | |
| v_nowotka | Base64 | 10 | |
| Zuzix | SSH Keys | 35 | |
| alright | Monoprime | 30 | |
| 25521051 | You either know, XOR you don't | 30 | |
| neoxquick | ECB CBC WTF | 55 | |
| Zuzix | CERTainly not | 30 | |
| azberjibiou | Greatest Common Divisor | 15 | |
| azberjibiou | Extended GCD | 20 | |
| 1234567890 | Finding Flags | 2 | |
| alright | Factoring | 15 | |
| nous | Checkpoint | 150 | |
| azberjibiou | Modular Arithmetic 1 | 20 | |
| azberjibiou | Quadratic Residues | 25 | |
| Zuzix | Privacy-Enhanced Mail? | 25 | |
| azberjibiou | Legendre Symbol | 35 | |
| Anubis1 | Modular Exponentiation | 10 | |
| miaoler | Factoring | 15 |
You are now level Current level