| Date | User | Challenge | Score |
| joaoramires | Hex | 5 | |
| Y4M4L | Great Snakes | 3 | |
| yael1 | RSA Decryption | 20 | |
| TH56 | XOR Starter | 10 | |
| koooaaa | You either know, XOR you don't | 30 | |
| 42u54 | Favourite byte | 20 | |
| Y4M4L | Finding Flags | 2 | |
| mingulino | Favourite byte | 20 | |
| Layf | XOR Properties | 15 | |
| OutOfTheWell | Marin's Secrets | 50 | |
| jinikin | Great Snakes | 3 | |
| 42u54 | XOR Properties | 15 | |
| yael1 | Private Keys | 20 | |
| pallas | RSA Signatures | 25 | |
| jinikin | Finding Flags | 2 | |
| mingulino | XOR Properties | 15 | |
| SegFaults1412 | You either know, XOR you don't | 30 | |
| 42u54 | XOR Starter | 10 | |
| joaoramires | ASCII | 5 | |
| joaoramires | Great Snakes | 3 | |
| ArcLulu | Adrien's Signs | 80 | |
| joaoramires | Finding Flags | 2 | |
| yael1 | Euler's Totient | 20 | |
| 4rt_ur | XOR Starter | 10 | |
| simbatfc | Extended GCD | 20 | |
| 42u54 | Bytes and Big Integers | 10 | |
| SegFaults1412 | Favourite byte | 20 | |
| CutRaNgoai | Chinese Remainder Theorem | 40 | |
| mingulino | XOR Starter | 10 | |
| OmeNn_ | Base64 | 10 | |
| SegFaults1412 | XOR Properties | 15 | |
| Kalachu | Bean Counter | 60 | |
| ahmadnouraltasdd | Legendre Symbol | 35 | |
| Kalachu | Symmetry | 50 | |
| Aile | Broken RSA | 100 | |
| OmeNn_ | Hex | 5 | |
| Kalachu | Flipping Cookie | 60 | |
| Kalachu | ECB CBC WTF | 55 | |
| Andrade | Square Eyes | 35 | |
| Kalachu | ECB Oracle | 60 | |
| Kalachu | Passwords as Keys | 50 | |
| Kalachu | Modes of Operation Starter | 15 | |
| Kalachu | Bringing It All Together | 50 | |
| Kalachu | Diffusion through Permutation | 30 | |
| Kalachu | Confusion through Substitution | 25 | |
| Kalachu | Round Keys | 20 | |
| illuminate0221 | CERTainly not | 30 | |
| Kalachu | Structure of AES | 15 | |
| itsmeheehee1356 | Finding Flags | 2 | |
| leopard | Bytes and Big Integers | 10 |
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