| Date | User | Challenge | Score |
| Spitfire447 | Bytes and Big Integers | 10 | |
| Orynbasar | Finding Flags | 2 | |
| DL1ght | Favourite byte | 20 | |
| Youri_Han | Legendre Symbol | 35 | |
| HyobinChoi | You either know, XOR you don't | 30 | |
| DL1ght | XOR Properties | 15 | |
| HyobinChoi | Favourite byte | 20 | |
| pipspops | Base64 | 10 | |
| DaLeX | Base64 | 10 | |
| DL1ght | XOR Starter | 10 | |
| HyobinChoi | XOR Properties | 15 | |
| DL1ght | Bytes and Big Integers | 10 | |
| Kirpi4 | Base64 | 10 | |
| akmazrhaaan | Finding Flags | 2 | |
| HyobinChoi | XOR Starter | 10 | |
| destoneuz | Bytes and Big Integers | 10 | |
| bbrth41 | You either know, XOR you don't | 30 | |
| HyobinChoi | Bytes and Big Integers | 10 | |
| LumaLen | Base64 | 10 | |
| HyobinChoi | Base64 | 10 | |
| Abdullo | Great Snakes | 3 | |
| AkaiKitsune_2107 | Modes of Operation Starter | 15 | |
| Aktan | Finding Flags | 2 | |
| Kirpi4 | Hex | 5 | |
| Abdullo | Finding Flags | 2 | |
| arzik | Favourite byte | 20 | |
| HARE | Hex | 5 | |
| arzik | XOR Properties | 15 | |
| Youri_Han | Quadratic Residues | 25 | |
| LumaLen | Hex | 5 | |
| arzik | XOR Starter | 10 | |
| pipspops | Hex | 5 | |
| istsgehdu | Great Snakes | 3 | |
| arzik | Bytes and Big Integers | 10 | |
| arzik | Base64 | 10 | |
| enlik | ASCII | 5 | |
| DL1ght | Base64 | 10 | |
| hungtrab | Finding Flags | 2 | |
| LumaLen | ASCII | 5 | |
| istsgehdu | Finding Flags | 2 | |
| DaLeX | Hex | 5 | |
| offspace12 | Base64 | 10 | |
| lory17 | XOR Starter | 10 | |
| DL1ght | Hex | 5 | |
| nangmanful | Flipping Cookie | 60 | |
| arzik | Hex | 5 | |
| enlik | Great Snakes | 3 | |
| pipspops | ASCII | 5 | |
| DL1ght | ASCII | 5 | |
| HARE | ASCII | 5 |
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