| Date | User | Challenge | Score |
| Omar_tillawy | Hash Stuffing | 50 | |
| Mitsouvis | Modular Square Root | 35 | |
| pw4ch7re3 | Privacy-Enhanced Mail? | 25 | |
| Buhh_ | Greatest Common Divisor | 15 | |
| PIKO9546 | Network Attacks | 5 | |
| Shamim_Khandakar | Adrien's Signs | 80 | |
| tonymagpie | Bytes and Big Integers | 10 | |
| idns04 | You either know, XOR you don't | 30 | |
| pw4ch7re3 | Lemur XOR | 40 | |
| tonymagpie | Network Attacks | 5 | |
| TasosB | Resisting Bruteforce | 10 | |
| krom6666 | Bytes and Big Integers | 10 | |
| idns04 | Favourite byte | 20 | |
| quocnguyenpa | Quadratic Residues | 25 | |
| krom6666 | Base64 | 10 | |
| Kreons | Flipping Cookie | 60 | |
| Galois | Endless Emails | 150 | |
| TasosB | Keyed Permutations | 5 | |
| idns04 | XOR Properties | 15 | |
| brhmgndgms | Favourite byte | 20 | |
| PIKO9546 | Great Snakes | 3 | |
| PIKO9546 | Finding Flags | 2 | |
| kieugiathinhphat | The Matrix Reloaded | 100 | |
| dXNlcm5hbWU_ | JWT Secrets | 25 | |
| krom6666 | Hex | 5 | |
| pw4ch7re3 | Encoding Challenge | 40 | |
| jrichard2539 | XOR Starter | 10 | |
| Kheeto | Bytes and Big Integers | 10 | |
| krom6666 | ASCII | 5 | |
| Shamim_Khandakar | Successive Powers | 60 | |
| krom6666 | Great Snakes | 3 | |
| Kheeto | Base64 | 10 | |
| krom6666 | Finding Flags | 2 | |
| idns04 | XOR Starter | 10 | |
| MaxK | Legendre Symbol | 35 | |
| Kheeto | Hex | 5 | |
| Kheeto | ASCII | 5 | |
| Rimsha1997 | Public Keys | 15 | |
| jrichard2539 | Bytes and Big Integers | 10 | |
| idns04 | Bytes and Big Integers | 10 | |
| Kheeto | Network Attacks | 5 | |
| dXNlcm5hbWU_ | No Way JOSE | 20 | |
| Galois | Everything is Still Big | 100 | |
| brhmgndgms | XOR Properties | 15 | |
| dXNlcm5hbWU_ | JWT Sessions | 10 | |
| idns04 | Base64 | 10 | |
| Galois | Everything is Big | 70 | |
| Rimsha1997 | Modular Exponentiation | 10 | |
| jrichard2539 | Base64 | 10 | |
| jrichard2539 | Hex | 5 |
You are now level Current level