| Date | User | Challenge | Score |
| zhengyiyi | Diffusion through Permutation | 30 | |
| jiojio | Modular Binomials | 80 | |
| zhengyiyi | Confusion through Substitution | 25 | |
| AACDAI | Rhetorical Oracle | 100 | |
| zhengyiyi | Round Keys | 20 | |
| hualiainiaini | Finding Flags | 2 | |
| zhengyiyi | Structure of AES | 15 | |
| zhengyiyi | Resisting Bruteforce | 10 | |
| zhyann | Favourite byte | 20 | |
| zhengyiyi | Keyed Permutations | 5 | |
| Chloe666 | Base64 | 10 | |
| nous | An Evil Twisted Mind | 175 | |
| Cameron | Modular Arithmetic 2 | 20 | |
| zhyann | XOR Properties | 15 | |
| Wistian | Favourite byte | 20 | |
| MrNught | Bringing It All Together | 50 | |
| av0idd4rk | Point Negation | 10 | |
| lll111 | Flipping Cookie | 60 | |
| zhyann | XOR Starter | 10 | |
| break | Finding Flags | 2 | |
| Khola | Hex | 5 | |
| zhyann | Encoding Challenge | 40 | |
| CristianB | Point Addition | 30 | |
| mricking2048 | Modular Inverting | 25 | |
| Wistian | XOR Properties | 15 | |
| av0idd4rk | Background Reading | 5 | |
| CristianB | Point Negation | 10 | |
| zhyann | Network Attacks | 5 | |
| king_xixi | XOR Starter | 10 | |
| NuC0co | Adrien's Signs | 80 | |
| Wolfdsea77 | Common Ground | 75 | |
| Lee20270 | Great Snakes | 3 | |
| Percolate | Encoding Challenge | 40 | |
| Lee20270 | Finding Flags | 2 | |
| mricking2048 | Manyprime | 40 | |
| thisismetrying | RSA Decryption | 20 | |
| A_Bilan | You either know, XOR you don't | 30 | |
| ali_tech | Lemur XOR | 40 | |
| ali_tech | You either know, XOR you don't | 30 | |
| ali_tech | Favourite byte | 20 | |
| Chloe666 | Hex | 5 | |
| A_Bilan | Favourite byte | 20 | |
| thisismetrying | Private Keys | 20 | |
| Chloe666 | ASCII | 5 | |
| emrys | Structure of AES | 15 | |
| ali_tech | XOR Properties | 15 | |
| Khola | ASCII | 5 | |
| king_xixi | Bytes and Big Integers | 10 | |
| neumorphic | Great Snakes | 3 | |
| ali_tech | XOR Starter | 10 |
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