| Date | User | Challenge | Score |
| hamzasafi | Bean Counter | 60 | |
| HandyZahwan04 | Finding Flags | 2 | |
| shasha | Greatest Common Divisor | 15 | |
| Joyjondy | XOR Properties | 15 | |
| ThinKing | Secret Exponents | 60 | |
| teun | Bringing It All Together | 50 | |
| ThinKing | Prime Power Isogenies | 50 | |
| hamzasafi | Symmetry | 50 | |
| hamzasafi | Flipping Cookie | 60 | |
| shasha | You either know, XOR you don't | 30 | |
| Podliq | You either know, XOR you don't | 30 | |
| hamzasafi | ECB CBC WTF | 55 | |
| hamzasafi | ECB Oracle | 60 | |
| hamzasafi | Passwords as Keys | 50 | |
| hackedyouagain | ASCII | 5 | |
| hackedyouagain | Great Snakes | 3 | |
| vtnam | Encoding Challenge | 40 | |
| Ammar_amm | Bean Counter | 60 | |
| kyalo | Monoprime | 30 | |
| lilyan | Finding Flags | 2 | |
| roundspecs | Base64 | 10 | |
| dcol61 | Modular Square Root | 35 | |
| Ammar_amm | Symmetry | 50 | |
| hackedyouagain | Finding Flags | 2 | |
| vr7xl | Passwords as Keys | 50 | |
| roundspecs | Hex | 5 | |
| teun | Diffusion through Permutation | 30 | |
| Ammar_amm | Flipping Cookie | 60 | |
| xiao1 | Bytes and Big Integers | 10 | |
| dcol61 | Legendre Symbol | 35 | |
| roundspecs | ASCII | 5 | |
| hamzasafi | Modes of Operation Starter | 15 | |
| sankk | ASCII | 5 | |
| roundspecs | Great Snakes | 3 | |
| sankk | Great Snakes | 3 | |
| Ammar_amm | ECB CBC WTF | 55 | |
| roundspecs | Finding Flags | 2 | |
| Ammar_amm | ECB Oracle | 60 | |
| ThibThib | Extended GCD | 20 | |
| Podliq | Favourite byte | 20 | |
| hamzasafi | Bringing It All Together | 50 | |
| Joyjondy | XOR Starter | 10 | |
| kyalo | Factoring | 15 | |
| Ammar_amm | Passwords as Keys | 50 | |
| anhkhongtoxic | Quadratic Residues | 25 | |
| Podliq | XOR Properties | 15 | |
| byxlopoqpul | ECB CBC WTF | 55 | |
| Ammar_amm | Modes of Operation Starter | 15 | |
| teun | Confusion through Substitution | 25 | |
| FRIEND | Base64 | 10 |
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