| Date | User | Challenge | Score |
| Irregular | Private Keys | 20 | |
| ITQ | Base64 | 10 | |
| imrane1 | Finding Flags | 2 | |
| Ayxannnn | Lemur XOR | 40 | |
| HAKIR123 | Favourite byte | 20 | |
| interrupt | Triple DES | 60 | |
| kareema | Favourite byte | 20 | |
| HAKIR | You either know, XOR you don't | 30 | |
| HAKIR | Favourite byte | 20 | |
| Ayxannnn | XOR Properties | 15 | |
| ibadov041 | Hex | 5 | |
| cplex | Base64 | 10 | |
| megerya | Bytes and Big Integers | 10 | |
| Do51k | Privacy-Enhanced Mail? | 25 | |
| megerya | Base64 | 10 | |
| megerya | Hex | 5 | |
| cplex | Hex | 5 | |
| megerya | ASCII | 5 | |
| Alizadeh | Hex | 5 | |
| Yusif | Favourite byte | 20 | |
| megerya | Great Snakes | 3 | |
| cplex | ASCII | 5 | |
| Alizadeh | ASCII | 5 | |
| Irregular | Euler's Totient | 20 | |
| Hasanbayov | Hex | 5 | |
| megerya | Finding Flags | 2 | |
| Hasanbayov | ASCII | 5 | |
| Do51k | SSH Keys | 35 | |
| kareema | XOR Properties | 15 | |
| DavidTruong | Beatboxer | 150 | |
| cplex | Great Snakes | 3 | |
| Irregular | Public Keys | 15 | |
| HAKIR | XOR Properties | 15 | |
| cplex | Finding Flags | 2 | |
| HAKIR123 | XOR Starter | 10 | |
| aysuna | Lemur XOR | 40 | |
| ilkinA | Lemur XOR | 40 | |
| Hasanbayov | Finding Flags | 2 | |
| KMA_SiriuS_ | Adrien's Signs | 80 | |
| Irregular | Modular Exponentiation | 10 | |
| Alizadeh | Finding Flags | 2 | |
| Ayxannnn | You either know, XOR you don't | 30 | |
| Amiraslanovv | Lemur XOR | 40 | |
| Yusif | XOR Properties | 15 | |
| ilkinA | XOR Starter | 10 | |
| centem | Private Keys | 20 | |
| ibadov041 | ASCII | 5 | |
| aysuna | XOR Properties | 15 | |
| sima | XOR Properties | 15 | |
| ilkinA | You either know, XOR you don't | 30 |
You are now level Current level