| Date | User | Challenge | Score |
| cedric013 | Dancing Queen | 120 | |
| winglet | Modular Square Root | 35 | |
| zausike | Modular Inverting | 25 | |
| cedric013 | Stream of Consciousness | 80 | |
| Denis_Roc | The Matrix | 75 | |
| rockstarben | ASCII | 5 | |
| kokingeyel123 | Great Snakes | 3 | |
| ascensi0n | Static Client 2 | 120 | |
| cedric013 | Logon Zero | 80 | |
| The_jungleRoot | Finding Flags | 2 | |
| chewinonthecable | Bytes and Big Integers | 10 | |
| 1595844086 | You either know, XOR you don't | 30 | |
| m4rked | Modular Arithmetic 2 | 20 | |
| RereWyrwisz | XOR Starter | 10 | |
| crypto0218 | Finding Flags | 2 | |
| cedric013 | CTRIME | 70 | |
| BanaxavSplit | Long Story Short | 60 | |
| kokingeyel123 | Finding Flags | 2 | |
| Leizoe | Computing Shared Secrets | 30 | |
| miguelemos | Too Honest | 50 | |
| mujahid2 | Base64 | 10 | |
| Aeryth | You either know, XOR you don't | 30 | |
| heqezz | Passwords as Keys | 50 | |
| HumanHumanName | Flipping Cookie | 60 | |
| rznanss61 | Great Snakes | 3 | |
| Leizoe | Computing Public Values | 25 | |
| ArgJerryL1120 | Resisting Bruteforce | 10 | |
| rockstarben | Great Snakes | 3 | |
| nikku | XOR Properties | 15 | |
| chewinonthecable | Base64 | 10 | |
| Leizoe | Generators of Groups | 20 | |
| cattt_owo | Background Reading | 5 | |
| ArgJerryL1120 | Keyed Permutations | 5 | |
| artem_1 | Export-grade | 100 | |
| cedric013 | Triple DES | 60 | |
| heqezz | Modes of Operation Starter | 15 | |
| miguelemos | Non-Interactive | 35 | |
| cedric013 | Lazy CBC | 60 | |
| Damsssss | Honest Verifier Zero Knowledge | 30 | |
| mujahid2 | Hex | 5 | |
| linzhi | Base64 | 10 | |
| akuma52 | Modular Inverting | 25 | |
| NuC0co | Encoding Challenge | 40 | |
| shlingshlong | XOR Starter | 10 | |
| alexcy | Parameter Injection | 60 | |
| xde | Finding Flags | 2 | |
| chewinonthecable | Hex | 5 | |
| shlingshlong | Encoding Challenge | 40 | |
| linzhi | Network Attacks | 5 | |
| Leizoe | Working with Fields | 10 |
You are now level Current level