| Date | User | Challenge | Score |
| 0xldcn | Hex | 5 | |
| MidoS3d | Square Eyes | 35 | |
| 0xldcn | ASCII | 5 | |
| Sitron | Base64 | 10 | |
| 0xldcn | Great Snakes | 3 | |
| kamilkaminski02 | MDFlag | 125 | |
| hyr | Resisting Bruteforce | 10 | |
| samba | XOR Starter | 10 | |
| PawelO210 | Finding Flags | 2 | |
| Baeco | Crossed Wires | 100 | |
| usturlap | Favourite byte | 20 | |
| hyr | Keyed Permutations | 5 | |
| 0xldcn | Finding Flags | 2 | |
| usturlap | XOR Properties | 15 | |
| samba | Bytes and Big Integers | 10 | |
| VuiVe | Static Client 2 | 120 | |
| usturlap | XOR Starter | 10 | |
| usturlap | Bytes and Big Integers | 10 | |
| Baeco | Everything is Big | 70 | |
| samba | Base64 | 10 | |
| sb01 | Export-grade | 100 | |
| samba | Hex | 5 | |
| samba | ASCII | 5 | |
| MidoS3d | Prime and Prejudice | 200 | |
| sb01 | Parameter Injection | 60 | |
| RDWay | Favourite byte | 20 | |
| Jonilele | Adrien's Signs | 80 | |
| yolhatti | ASCII | 5 | |
| sb01 | Deriving Symmetric Keys | 40 | |
| DRMugg | Bean Counter | 60 | |
| Romyna | Public Keys | 15 | |
| samba | Great Snakes | 3 | |
| mdybicz | Everything is Big | 70 | |
| yolhatti | Great Snakes | 3 | |
| sb01 | Computing Shared Secrets | 30 | |
| reodus | Computing Public Values | 25 | |
| Baeco | Square Eyes | 35 | |
| kamilkaminski02 | Merkle Trees | 25 | |
| S3ld0m | Hex | 5 | |
| S3ld0m | ASCII | 5 | |
| S3ld0m | Great Snakes | 3 | |
| khafi | Quadratic Residues | 25 | |
| S3ld0m | Finding Flags | 2 | |
| wojtunio19 | Export-grade | 100 | |
| DRMugg | Triple DES | 60 | |
| Baeco | Inferius Prime | 30 | |
| sb01 | Computing Public Values | 25 | |
| sb01 | Generators of Groups | 20 | |
| DRMugg | Symmetry | 50 | |
| trovsmisqwsro | Jack's Birthday Confusion | 30 |
You are now level Current level