| Date | User | Challenge | Score |
| aiberus | Modular Inverting | 25 | |
| PescaruS | Adrien's Signs | 80 | |
| olsujabu | JWT Secrets | 25 | |
| SG_42 | Base64 | 10 | |
| BETY | Great Snakes | 3 | |
| BETY | Finding Flags | 2 | |
| SG_42 | Hex | 5 | |
| kev6 | Passwords as Keys | 50 | |
| olsujabu | No Way JOSE | 20 | |
| CrankyPants | ECB Oracle | 60 | |
| olsujabu | JWT Sessions | 10 | |
| leenAqraa | Base64 | 10 | |
| ENOENT | Bad Temper | 130 | |
| olsujabu | Token Appreciation | 5 | |
| kev6 | Modes of Operation Starter | 15 | |
| kev6 | Bringing It All Together | 50 | |
| PescaruS | Chinese Remainder Theorem | 40 | |
| SG_42 | ASCII | 5 | |
| mzz | Diffusion through Permutation | 30 | |
| aiberus | Modular Arithmetic 2 | 20 | |
| SG_42 | Great Snakes | 3 | |
| SG_42 | Finding Flags | 2 | |
| leenAqraa | Hex | 5 | |
| sseb | Base64 | 10 | |
| gluecicle | Structure of AES | 15 | |
| leenAqraa | ASCII | 5 | |
| aiberus | Modular Arithmetic 1 | 20 | |
| sseb | Hex | 5 | |
| Nathaly_Castillo | Privacy-Enhanced Mail? | 25 | |
| leenAqraa | Great Snakes | 3 | |
| mzz | Confusion through Substitution | 25 | |
| aiberus | Extended GCD | 20 | |
| leenAqraa | Finding Flags | 2 | |
| muqqi | Monoprime | 30 | |
| kev6 | Diffusion through Permutation | 30 | |
| lobonicter | ASCII | 5 | |
| lobonicter | Network Attacks | 5 | |
| matiosos | CERTainly not | 30 | |
| kev6 | Confusion through Substitution | 25 | |
| sseb | ASCII | 5 | |
| thaer | Finding Flags | 2 | |
| mmihov | Export-grade | 100 | |
| LordZorg | XOR Properties | 15 | |
| Cyber_ghost | Base64 | 10 | |
| Blossom42 | Bytes and Big Integers | 10 | |
| Cyber_ghost | Hex | 5 | |
| Pearce | Great Snakes | 3 | |
| matiosos | Privacy-Enhanced Mail? | 25 | |
| Cyber_ghost | ASCII | 5 | |
| matiosos | Modular Inverting | 25 |
You are now level Current level