| Date | User | Challenge | Score |
| mrkuba1 | Finding Flags | 2 | |
| PatrykJ | Encoding Challenge | 40 | |
| Piotr3121 | Greatest Common Divisor | 15 | |
| hkerma | Base64 | 10 | |
| mrkuba1 | Lemur XOR | 40 | |
| pelimac | Modes of Operation Starter | 15 | |
| Frostbyte0x0 | Base64 | 10 | |
| hkerma | Hex | 5 | |
| Frostbyte0x0 | Hex | 5 | |
| larper | Hex | 5 | |
| Mrizek | Hex | 5 | |
| Frostbyte0x0 | ASCII | 5 | |
| Mrizek | ASCII | 5 | |
| larper | ASCII | 5 | |
| mrkuba1 | You either know, XOR you don't | 30 | |
| jyjy_tech | Finding Flags | 2 | |
| Frostbyte0x0 | Network Attacks | 5 | |
| crypto_manga | Base64 | 10 | |
| hkerma | ASCII | 5 | |
| Mrizek | Great Snakes | 3 | |
| hkerma | Great Snakes | 3 | |
| Frostbyte0x0 | Great Snakes | 3 | |
| ShutdownBringer | RSA Signatures | 25 | |
| Mrizek | Finding Flags | 2 | |
| Frostbyte0x0 | Finding Flags | 2 | |
| hkerma | Finding Flags | 2 | |
| mrkuba1 | Modular Inverting | 25 | |
| Wookie7602 | ASCII | 5 | |
| ReyChinchano | Adrien's Signs | 80 | |
| Amezquita | Bean Counter | 60 | |
| Marchet_91 | Common Ground | 75 | |
| pelimac | Bringing It All Together | 50 | |
| Amezquita | Symmetry | 50 | |
| pelimac | Diffusion through Permutation | 30 | |
| crypto_manga | Hex | 5 | |
| Amezquita | Flipping Cookie | 60 | |
| mathlegochess | Finding Flags | 2 | |
| mrkuba1 | Modular Arithmetic 2 | 20 | |
| crypto_manga | ASCII | 5 | |
| Amezquita | ECB CBC WTF | 55 | |
| crypto_manga | Great Snakes | 3 | |
| pelimac | Confusion through Substitution | 25 | |
| Amezquita | ECB Oracle | 60 | |
| crypto_manga | Finding Flags | 2 | |
| pelimac | Round Keys | 20 | |
| mrkuba1 | CERTainly not | 30 | |
| pelimac | Structure of AES | 15 | |
| mrkuba1 | Privacy-Enhanced Mail? | 25 | |
| Khan01 | Greatest Common Divisor | 15 | |
| demr | Digestive | 60 |
You are now level Current level