| Date | User | Challenge | Score |
| PSYPrime | Noise Free | 40 | |
| RPKBasilisk | LFSR Destroyer | 250 | |
| xecter | Base64 | 10 | |
| doanhaphong | Modular Inverting | 25 | |
| loveher | Square Eyes | 35 | |
| RPKBasilisk | RSA vs RNG | 150 | |
| StackGlit | You either know, XOR you don't | 30 | |
| TwoShrimp | Quadratic Residues | 25 | |
| doanhaphong | Modular Arithmetic 2 | 20 | |
| cbarrera | Lemur XOR | 40 | |
| xecter | Hex | 5 | |
| cbarrera | You either know, XOR you don't | 30 | |
| RPKBasilisk | Jeff's LFSR | 150 | |
| RPKBasilisk | Bruce Schneier's Password: Part 2 | 250 | |
| dempokey | Paper Plane | 120 | |
| loveher | Monoprime | 30 | |
| cbarrera | Favourite byte | 20 | |
| IgnAto | Adrien's Signs | 80 | |
| loveher | Inferius Prime | 30 | |
| edjosisa | You either know, XOR you don't | 30 | |
| sagsilver | ASCII | 5 | |
| edjosisa | Favourite byte | 20 | |
| xecter | ASCII | 5 | |
| sagsilver | Great Snakes | 3 | |
| edjosisa | XOR Properties | 15 | |
| turtur | Adrien's Signs | 80 | |
| HMMOKEHOKEH | Finding Flags | 2 | |
| matheus_8789142 | Factoring | 15 | |
| sagsilver | Finding Flags | 2 | |
| RPKBasilisk | Let's Decrypt Again | 175 | |
| m30wlin | You either know, XOR you don't | 30 | |
| xecter | Great Snakes | 3 | |
| m30wlin | Favourite byte | 20 | |
| edjosisa | XOR Starter | 10 | |
| asd123 | Null or Never | 100 | |
| m30wlin | XOR Properties | 15 | |
| m30wlin | XOR Starter | 10 | |
| m30wlin | Bytes and Big Integers | 10 | |
| Jhonson | Great Snakes | 3 | |
| m30wlin | Base64 | 10 | |
| m30wlin | Hex | 5 | |
| loveher | Factoring | 15 | |
| m3n059 | RSA Backdoor Viability | 175 | |
| m30wlin | ASCII | 5 | |
| m30wlin | Great Snakes | 3 | |
| m30wlin | Finding Flags | 2 | |
| kuripuri | Passwords as Keys | 50 | |
| RPKBasilisk | Invariant | 250 | |
| nixu_chiller | Modes of Operation Starter | 15 | |
| cbarrera | XOR Properties | 15 |
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