| Date | User | Challenge | Score |
| lololololokol | Lemur XOR | 40 | |
| burp | Hex | 5 | |
| EthanIn | Modular Inverting | 25 | |
| ybober | Bytes and Big Integers | 10 | |
| cyberinsecure | Base64 | 10 | |
| saudansari33190 | Hex | 5 | |
| kk57n | Great Snakes | 3 | |
| EthanIn | Modular Arithmetic 2 | 20 | |
| burp | ASCII | 5 | |
| ybober | Base64 | 10 | |
| ybober | Hex | 5 | |
| cyberinsecure | Hex | 5 | |
| ybober | ASCII | 5 | |
| kalikatto | Greatest Common Divisor | 15 | |
| ybober | Great Snakes | 3 | |
| cyberinsecure | ASCII | 5 | |
| ybober | Finding Flags | 2 | |
| saudansari33190 | ASCII | 5 | |
| Superior | ECLCG (HITCON CTF) | 0 | |
| kk57n | Finding Flags | 2 | |
| cyberinsecure | Great Snakes | 3 | |
| saudansari33190 | Great Snakes | 3 | |
| cyberinsecure | Finding Flags | 2 | |
| klowjin | Greatest Common Divisor | 15 | |
| Jaewon852 | Favourite byte | 20 | |
| saudansari33190 | Finding Flags | 2 | |
| Maypark | You either know, XOR you don't | 30 | |
| kataracz | You either know, XOR you don't | 30 | |
| Cunchem | Finding Flags | 2 | |
| Maypark | Favourite byte | 20 | |
| furansupan | RSA Decryption | 20 | |
| Jaewon852 | XOR Properties | 15 | |
| ashwan | Euler's Totient | 20 | |
| thkim | Private Keys | 20 | |
| thkim | RSA Decryption | 20 | |
| EthanIn | Modular Arithmetic 1 | 20 | |
| odysseus444 | Modular Inverting | 25 | |
| Superior | Blind (ECSC 2023 (Norway)) | 0 | |
| jjangda | RSA Decryption | 20 | |
| Maypark | XOR Properties | 15 | |
| ashwan | Public Keys | 15 | |
| sbfmt | RSA Decryption | 20 | |
| Roldat | Public Keys | 15 | |
| prussianblue | You either know, XOR you don't | 30 | |
| jjangda | Private Keys | 20 | |
| chocopoco | RSA Decryption | 20 | |
| skiller3478 | Network Attacks | 5 | |
| thkim | Euler's Totient | 20 | |
| Jaewon852 | XOR Starter | 10 | |
| furansupan | Private Keys | 20 |
You are now level Current level