| Date | User | Challenge | Score |
| meganageur | Resisting Bruteforce | 10 | |
| B00177179 | The Matrix | 75 | |
| deyanix | Export-grade | 100 | |
| 01180766 | Decrypting TLS 1.3 | 35 | |
| oscarzerotw | Favourite byte | 20 | |
| Minhhau | Adrien's Signs | 80 | |
| User0069 | Encoding Challenge | 40 | |
| A98A | XOR Starter | 10 | |
| philiaa_ | Favourite byte | 20 | |
| Minhhau | Chinese Remainder Theorem | 40 | |
| Minhhau | Modular Square Root | 35 | |
| philiaa_ | XOR Properties | 15 | |
| A98A | Bytes and Big Integers | 10 | |
| Minhhau | Legendre Symbol | 35 | |
| A98A | Base64 | 10 | |
| guyu | Export-grade | 100 | |
| meganageur | You either know, XOR you don't | 30 | |
| guyu | Parameter Injection | 60 | |
| amisa | XOR Starter | 10 | |
| deyanix | Parameter Injection | 60 | |
| philiaa_ | XOR Starter | 10 | |
| truffles | Bytes and Big Integers | 10 | |
| meganageur | Favourite byte | 20 | |
| halliana | Cipher Mode Picker (HKCERT CTF) | 0 | |
| truffles | Base64 | 10 | |
| deyanix | Deriving Symmetric Keys | 40 | |
| Thaimeo2006 | Point Negation | 10 | |
| SHUIU | Favourite byte | 20 | |
| Thaimeo2006 | Background Reading | 5 | |
| philiaa_ | Bytes and Big Integers | 10 | |
| guyu | Deriving Symmetric Keys | 40 | |
| deyanix | Computing Shared Secrets | 30 | |
| deyanix | Computing Public Values | 25 | |
| Kospatt | Bespoke Padding | 100 | |
| deyanix | Generators of Groups | 20 | |
| truffles | Hex | 5 | |
| deyanix | Working with Fields | 10 | |
| SHUIU | XOR Properties | 15 | |
| Romyna | OffTopic (ECSC 2024 (Italy)) | 0 | |
| fjukh7872 | Network Attacks | 5 | |
| Iatae | Legendre Symbol | 35 | |
| meganageur | XOR Properties | 15 | |
| learn4530 | Base64 | 10 | |
| CCcat | Transparency | 50 | |
| fjukh7872 | Great Snakes | 3 | |
| learn4530 | Hex | 5 | |
| fjukh7872 | Finding Flags | 2 | |
| learn4530 | ASCII | 5 | |
| learn4530 | Great Snakes | 3 | |
| learn4530 | Finding Flags | 2 |
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