| Date | User | Challenge | Score |
| Cheeb13 | Bytes and Big Integers | 10 | |
| DinoGun | Adrien's Signs | 80 | |
| du_spin | Hex | 5 | |
| du_spin | ASCII | 5 | |
| qwra | CTRIME | 70 | |
| du_spin | Great Snakes | 3 | |
| YWzhong | Adrien's Signs | 80 | |
| du_spin | Finding Flags | 2 | |
| ZiggyNorton | Greatest Common Divisor | 15 | |
| yawnfate2442 | ASCII | 5 | |
| yawnfate2442 | Great Snakes | 3 | |
| yawnfate2442 | Finding Flags | 2 | |
| linstinaus | Base64 | 10 | |
| linstinaus | Hex | 5 | |
| linstinaus | ASCII | 5 | |
| linstinaus | Great Snakes | 3 | |
| linstinaus | Finding Flags | 2 | |
| Meganmatician | Base64 | 10 | |
| Meganmatician | Hex | 5 | |
| Meganmatician | ASCII | 5 | |
| feynhat | Working with Fields | 10 | |
| feynhat | Manyprime | 40 | |
| Meganmatician | Great Snakes | 3 | |
| Meganmatician | Finding Flags | 2 | |
| jimun | Legendre Symbol | 35 | |
| ZiggyNorton | You either know, XOR you don't | 30 | |
| feynhat | Monoprime | 30 | |
| ZiggyNorton | Favourite byte | 20 | |
| whoamityek | Structure of AES | 15 | |
| MoMoMie | Finding Flags | 2 | |
| whoamityek | Resisting Bruteforce | 10 | |
| whoamityek | Keyed Permutations | 5 | |
| PUTELLAS_102 | Bytes and Big Integers | 10 | |
| M0xX | Resisting Bruteforce | 10 | |
| M0xX | Keyed Permutations | 5 | |
| PUTELLAS_102 | Base64 | 10 | |
| Cheeb13 | Base64 | 10 | |
| panconqueso | Bytes and Big Integers | 10 | |
| Cheeb13 | Hex | 5 | |
| PUTELLAS_102 | Hex | 5 | |
| NOUF | Finding Flags | 2 | |
| asfd98123rejk | SSH Keys | 35 | |
| PUTELLAS_102 | ASCII | 5 | |
| PUTELLAS_102 | Great Snakes | 3 | |
| cwh64 | You either know, XOR you don't | 30 | |
| hhtet | Resisting Bruteforce | 10 | |
| asfd98123rejk | CERTainly not | 30 | |
| hhtet | Keyed Permutations | 5 | |
| andreandre | Greatest Common Divisor | 15 | |
| 1tsRyd3r | The Good, The Pad, The Ugly | 100 |
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