| Date | User | Challenge | Score |
| binb4231 | Hex | 5 | |
| binb4231 | ASCII | 5 | |
| Peseta | Hex | 5 | |
| Peseta | ASCII | 5 | |
| LACiA | Pairing-Based Cryptography | 50 | |
| binb4231 | Great Snakes | 3 | |
| binb4231 | Finding Flags | 2 | |
| lulu2233 | Base64 | 10 | |
| yokaroot | Great Snakes | 3 | |
| Peseta | Great Snakes | 3 | |
| Peseta | Finding Flags | 2 | |
| M93 | Modular Inverting | 25 | |
| lulu2233 | Hex | 5 | |
| yokaroot | Finding Flags | 2 | |
| joyaljose | Hex | 5 | |
| Flusky_1 | Finding Flags | 2 | |
| joyaljose | ASCII | 5 | |
| M93 | Modular Arithmetic 2 | 20 | |
| joyaljose | Great Snakes | 3 | |
| dsunshine1 | Finding Flags | 2 | |
| joyaljose | Finding Flags | 2 | |
| kosa4416 | ASCII | 5 | |
| lewalker | Confusion through Substitution | 25 | |
| stc15 | Chinese Remainder Theorem | 40 | |
| NoBirdWasHam | JSON in JSON | 40 | |
| radarhat | Modular Arithmetic 2 | 20 | |
| NoBirdWasHam | Token Appreciation | 5 | |
| radarhat | Modular Arithmetic 1 | 20 | |
| radarhat | Extended GCD | 20 | |
| Elidan | You either know, XOR you don't | 30 | |
| Adone | Great Snakes | 3 | |
| stc15 | Modular Square Root | 35 | |
| 0hexor | Greatest Common Divisor | 15 | |
| dipalj | Finding Flags | 2 | |
| radarhat | Greatest Common Divisor | 15 | |
| NoBirdWasHam | JWT Sessions | 10 | |
| radarhat | You either know, XOR you don't | 30 | |
| packmad | Symmetry | 50 | |
| dbarania | XOR Properties | 15 | |
| NoBirdWasHam | JWT Secrets | 25 | |
| NoBirdWasHam | No Way JOSE | 20 | |
| NoBirdWasHam | LWE Intro | 10 | |
| NoBirdWasHam | Vectors | 10 | |
| NoBirdWasHam | LWE Background | 5 | |
| packmad | ECB CBC WTF | 55 | |
| dbarania | XOR Starter | 10 | |
| radarhat | Favourite byte | 20 | |
| Anti_ | Digestive | 60 | |
| packmad | Chinese Remainder Theorem | 40 | |
| Anti_ | Double and Broken | 50 |
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