| Date | User | Challenge | Score |
| NaRoxa | Greatest Common Divisor | 15 | |
| Taras_098772 | Favourite byte | 20 | |
| Taras_098772 | XOR Properties | 15 | |
| Sapphoneix | ASCII | 5 | |
| Taras_098772 | XOR Starter | 10 | |
| NaRoxa | You either know, XOR you don't | 30 | |
| NaRoxa | Favourite byte | 20 | |
| Taras_098772 | Bytes and Big Integers | 10 | |
| Ravage0664 | XOR Starter | 10 | |
| Taras_098772 | Base64 | 10 | |
| NaRoxa | XOR Properties | 15 | |
| NaRoxa | XOR Starter | 10 | |
| NaRoxa | Bytes and Big Integers | 10 | |
| NaRoxa | Base64 | 10 | |
| NaRoxa | Hex | 5 | |
| NaRoxa | ASCII | 5 | |
| NaRoxa | Great Snakes | 3 | |
| NaRoxa | Finding Flags | 2 | |
| Taras_098772 | Hex | 5 | |
| Taras_098772 | ASCII | 5 | |
| Taras_098772 | Great Snakes | 3 | |
| Sapphoneix | Great Snakes | 3 | |
| Taras_098772 | Finding Flags | 2 | |
| Lutris | Working with Fields | 10 | |
| UrSourceCode | ASCII | 5 | |
| Soisina | Adrien's Signs | 80 | |
| Ravage0664 | Bytes and Big Integers | 10 | |
| ngynmq | Gram Schmidt | 30 | |
| BoomCat | Modular Inverting | 25 | |
| Hattmakare | Point Addition | 30 | |
| BoomCat | Modular Arithmetic 2 | 20 | |
| Sapphoneix | Finding Flags | 2 | |
| spy003 | Triple DES | 60 | |
| ho_ongvyy | Montgomery's Ladder | 40 | |
| Shelob | Modular Arithmetic 2 | 20 | |
| PAVN | Broken RSA | 100 | |
| PAVN | No Way Back Home | 100 | |
| Garab | Hamiltonicity 2 | 175 | |
| Garab | Hamiltonicity 2 (CryptoHack) | 0 | |
| rubber_duck | Passwords as Keys | 50 | |
| madelino | Jack's Birthday Confusion | 30 | |
| dorianliu | Finding Flags | 2 | |
| pfrail2004 | Bytes and Big Integers | 10 | |
| vladstar69 | Broken RSA | 100 | |
| madelino | Jack's Birthday Hash | 20 | |
| ayammm | Greatest Common Divisor | 15 | |
| UrSourceCode | Network Attacks | 5 | |
| UrSourceCode | Great Snakes | 3 | |
| mochaowo | Saying Hello | 20 | |
| vladstar69 | No Way Back Home | 100 |
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