| Date | User | Challenge | Score |
| KULL4N4R1 | Bytes and Big Integers | 10 | |
| Janarthanan | XOR Starter | 10 | |
| jinseo | Micro Transmissions | 120 | |
| Dcaha001 | Great Snakes | 3 | |
| Dcaha001 | Finding Flags | 2 | |
| zhubat | Factoring | 15 | |
| sstyy | Great Snakes | 3 | |
| JunhyeongShin | Curves and Logs | 40 | |
| SuiChan_wa | RSA Signatures | 25 | |
| vibehutao | Keyed Permutations | 5 | |
| myothidahtun | You either know, XOR you don't | 30 | |
| vibehutao | Modular Binomials | 80 | |
| ungjae | Smooth Criminal | 60 | |
| Nicholas_Ong | XOR Properties | 15 | |
| Nicholas_Ong | XOR Starter | 10 | |
| m1rabil1z | Adrien's Signs | 80 | |
| Fluvfy | Extended GCD | 20 | |
| 0xs1nr | The Good, The Pad, The Ugly | 100 | |
| Miyamoto_bushi | You either know, XOR you don't | 30 | |
| vibehutao | Adrien's Signs | 80 | |
| Miyamoto_bushi | Favourite byte | 20 | |
| PrinfD | Salty | 20 | |
| Spartan117 | Great Snakes | 3 | |
| aosabi | Modular Inverting | 25 | |
| Miyamoto_bushi | XOR Properties | 15 | |
| Miyamoto_bushi | XOR Starter | 10 | |
| Ohrorong | Curveball | 100 | |
| Miyamoto_bushi | Bytes and Big Integers | 10 | |
| vibehutao | Chinese Remainder Theorem | 40 | |
| vibehutao | Modular Square Root | 35 | |
| 2021lzy | Greatest Common Divisor | 15 | |
| Miyamoto_bushi | Base64 | 10 | |
| 2021lzy | You either know, XOR you don't | 30 | |
| vibehutao | Legendre Symbol | 35 | |
| Miyamoto_bushi | Hex | 5 | |
| Spartan117 | Finding Flags | 2 | |
| zhubat | Modes of Operation Starter | 15 | |
| mamun30cse | Encoding Challenge | 40 | |
| Miyamoto_bushi | ASCII | 5 | |
| mamun30cse | Bytes and Big Integers | 10 | |
| mamun30cse | Base64 | 10 | |
| Miyamoto_bushi | Great Snakes | 3 | |
| mamun30cse | Hex | 5 | |
| mamun30cse | ASCII | 5 | |
| mamun30cse | Network Attacks | 5 | |
| Ohrorong | Digestive | 60 | |
| syadidd | RSA Signatures | 25 | |
| mamun30cse | Great Snakes | 3 | |
| mamun30cse | Finding Flags | 2 | |
| cuuntzu | Great Snakes | 3 |
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