| Date | User | Challenge | Score |
| 25520158 | Hex | 5 | |
| durga24 | Finding Flags | 2 | |
| Onirix | You either know, XOR you don't | 30 | |
| 25520158 | ASCII | 5 | |
| tomLU | Hash Stuffing | 50 | |
| jablonskim | SSH Keys | 35 | |
| KingBar04 | Favourite byte | 20 | |
| kjs36202 | Generators of Groups | 20 | |
| wapoy64924 | JSON in JSON | 40 | |
| LittleHacker | Passwords as Keys | 50 | |
| lxznb | You either know, XOR you don't | 30 | |
| Lucien | Bytes and Big Integers | 10 | |
| jablonskim | CERTainly not | 30 | |
| kzzm | Collider | 50 | |
| ayshi | Extended GCD | 20 | |
| solidus | Blinding Light | 120 | |
| grazkaa | CERTainly not | 30 | |
| AjBanao | Adrien's Signs | 80 | |
| Mihafil746 | Ellipse Curve Cryptography | 125 | |
| LittleHacker | Network Attacks | 5 | |
| namaorantauga | Base64 | 10 | |
| jablonskim | Privacy-Enhanced Mail? | 25 | |
| KingBar04 | XOR Properties | 15 | |
| jablonskim | Encoding Challenge | 40 | |
| dhrisaurus | Resisting Bruteforce | 10 | |
| AjBanao | Chinese Remainder Theorem | 40 | |
| AjBanao | Modular Square Root | 35 | |
| AjBanao | Legendre Symbol | 35 | |
| picxxel | Background Reading | 5 | |
| AjBanao | Quadratic Residues | 25 | |
| AjBanao | Modular Inverting | 25 | |
| AjBanao | Modular Arithmetic 2 | 20 | |
| AjBanao | Modular Arithmetic 1 | 20 | |
| tackmin1204 | Bytes and Big Integers | 10 | |
| dhrisaurus | Keyed Permutations | 5 | |
| Ragnarok | ASCII | 5 | |
| Raunan | Proofs of Knowledge | 20 | |
| maousi | JWT Sessions | 10 | |
| AjBanao | Extended GCD | 20 | |
| jablonskim | Lemur XOR | 40 | |
| AjBanao | Greatest Common Divisor | 15 | |
| namaorantauga | Hex | 5 | |
| jablonskim | Modular Binomials | 80 | |
| KingBar04 | XOR Starter | 10 | |
| Mihafil746 | RSA vs RNG | 150 | |
| jablonskim | Adrien's Signs | 80 | |
| F25 | Gotta Go Fast | 40 | |
| KingBar04 | Bytes and Big Integers | 10 | |
| namaorantauga | ASCII | 5 | |
| F25 | Too Honest | 50 |
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