| Date | User | Challenge | Score |
| Xai224 | XOR Starter | 10 | |
| bhanuPathak | Monoprime | 30 | |
| Xai224 | Bytes and Big Integers | 10 | |
| Ah_Error | JWT Secrets | 25 | |
| chadlerbingbong | ECB CBC WTF | 55 | |
| tudaiobratno | Crossed Wires | 100 | |
| Xai224 | Base64 | 10 | |
| bhanuPathak | Factoring | 15 | |
| bektish | Chinese Remainder Theorem | 40 | |
| Aeneas7 | Signing Server | 60 | |
| Myc | Finding Flags | 2 | |
| Xai224 | Hex | 5 | |
| kaisersort | XOR Properties | 15 | |
| Xai224 | ASCII | 5 | |
| Ah_Error | RSA Backdoor Viability | 175 | |
| Xai224 | Great Snakes | 3 | |
| Xai224 | Finding Flags | 2 | |
| Ah_Error | No Way JOSE | 20 | |
| mrgeek | Network Attacks | 5 | |
| Mateusz_Kowalski | Passwords as Keys | 50 | |
| AP | Favourite byte | 20 | |
| eternalstrike | ECB Oracle | 60 | |
| minhweaa | Private Keys | 20 | |
| Sole | Bringing It All Together | 50 | |
| nml | Great Snakes | 3 | |
| nml | Finding Flags | 2 | |
| kien | ECB CBC WTF | 55 | |
| Ah_Error | JWT Sessions | 10 | |
| Sole | Diffusion through Permutation | 30 | |
| PaulVogel | Favourite byte | 20 | |
| Sole | Confusion through Substitution | 25 | |
| Mateusz_Kowalski | Modes of Operation Starter | 15 | |
| Sole | Round Keys | 20 | |
| caizer | Greatest Common Divisor | 15 | |
| mrgeek | Greatest Common Divisor | 15 | |
| Ah_Error | ECB Oracle | 60 | |
| tomlv511 | Favourite byte | 20 | |
| Sole | Structure of AES | 15 | |
| Thaimeo2006 | Curveball | 100 | |
| Necrovelts | Modular Arithmetic 1 | 20 | |
| minhtientntn | ASCII | 5 | |
| Sole | Extended GCD | 20 | |
| Sole | Greatest Common Divisor | 15 | |
| minhtientntn | Great Snakes | 3 | |
| vaggelisarg13 | Monoprime | 30 | |
| oscarzerotw | Modular Arithmetic 2 | 20 | |
| minhtientntn | Finding Flags | 2 | |
| Dfmari | ASCII | 5 | |
| 0xGh4zy | Modes of Operation Starter | 15 | |
| YK_QK | Bytes and Big Integers | 10 |
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