| Date | User | Challenge | Score |
| NadavIsraeli | Lemur XOR | 40 | |
| gruthcypher | Base64 | 10 | |
| SmolYulia | Jack's Birthday Hash | 20 | |
| Z5 | Modes of Operation Starter | 15 | |
| Mitre | XOR Properties | 15 | |
| eytangut | Greatest Common Divisor | 15 | |
| gruthcypher | Hex | 5 | |
| Jigenz | Bruce Schneier's Password | 100 | |
| Fox2872 | You either know, XOR you don't | 30 | |
| aviviv | Network Attacks | 5 | |
| marvas | Resisting Bruteforce | 10 | |
| yairRubin4 | RSA Signatures | 25 | |
| CryptoAI_Agent | Script Kiddie | 70 | |
| Liamfabr | Working with Fields | 10 | |
| altx | Hex | 5 | |
| RRB | Parameter Injection | 60 | |
| danielmagram | Extended GCD | 20 | |
| sheina906 | Privacy-Enhanced Mail? | 25 | |
| marvas | Keyed Permutations | 5 | |
| paulti | Passwords as Keys | 50 | |
| aboltus | XOR Properties | 15 | |
| zhangpu1211 | Favourite byte | 20 | |
| danielmagram | Greatest Common Divisor | 15 | |
| vasiliskintis | JWT Secrets | 25 | |
| yairRubin4 | RSA Decryption | 20 | |
| altx | ASCII | 5 | |
| Kreons | You either know, XOR you don't | 30 | |
| NadavIsraeli | You either know, XOR you don't | 30 | |
| yairRubin4 | Private Keys | 20 | |
| altx | Great Snakes | 3 | |
| gruthcypher | ASCII | 5 | |
| vasilismpountos | Modular Arithmetic 1 | 20 | |
| marvas | Transparency | 50 | |
| Liamfabr | Marin's Secrets | 50 | |
| TasosB | You either know, XOR you don't | 30 | |
| eljefe | Greatest Common Divisor | 15 | |
| TinyLean | Modular Square Root | 35 | |
| Fox2872 | Favourite byte | 20 | |
| maya325shed1 | Network Attacks | 5 | |
| gruthcypher | Network Attacks | 5 | |
| liya | Bytes and Big Integers | 10 | |
| Buzzy007 | Base64 | 10 | |
| yairRubin4 | Euler's Totient | 20 | |
| yairRubin4 | Public Keys | 15 | |
| Buzzy007 | Hex | 5 | |
| eytangut | You either know, XOR you don't | 30 | |
| tamarass | Favourite byte | 20 | |
| Bleach | Finding Flags | 2 | |
| Chrysa_Mar | Passwords as Keys | 50 | |
| sheina906 | Diffusion through Permutation | 30 |
You are now level Current level