| Date | User | Challenge | Score |
| levaine | Extended GCD | 20 | |
| anynomous | Favourite byte | 20 | |
| trovsmisqwsro | ECB CBC WTF | 55 | |
| levaine | Greatest Common Divisor | 15 | |
| trovsmisqwsro | Passwords as Keys | 50 | |
| That11thHarmonic | Symmetry | 50 | |
| antony_negr | Bytes and Big Integers | 10 | |
| Mago_Implacavel | MDFlag | 125 | |
| Kuehler_s | XOR Properties | 15 | |
| trovsmisqwsro | Modes of Operation Starter | 15 | |
| trovsmisqwsro | Bringing It All Together | 50 | |
| Kuehler_s | XOR Starter | 10 | |
| omelet | RSA vs RNG | 150 | |
| MiquelCryptoTech | Hex | 5 | |
| rikuland | Curves and Logs | 40 | |
| Carixo | Endless Emails | 150 | |
| Kuehler_s | Bytes and Big Integers | 10 | |
| calvernaz | Smooth Criminal | 60 | |
| Patonymous | Paper Plane | 120 | |
| hyperkahler | Bytes and Big Integers | 10 | |
| Patonymous | Dancing Queen | 120 | |
| antony_negr | Base64 | 10 | |
| anynomous | XOR Properties | 15 | |
| levaine | XOR Starter | 10 | |
| Klaudia | Authenticated Handshake | 40 | |
| MiquelCryptoTech | ASCII | 5 | |
| That11thHarmonic | Flipping Cookie | 60 | |
| Patonymous | Oh SNAP | 120 | |
| levaine | Bytes and Big Integers | 10 | |
| skiller3478 | Modular Arithmetic 2 | 20 | |
| MiquelCryptoTech | Great Snakes | 3 | |
| omelet | Too Many Errors | 100 | |
| Janek0 | Bringing It All Together | 50 | |
| Patonymous | Triple DES | 60 | |
| ltwind_v2 | The Matrix Reloaded | 100 | |
| MiquelCryptoTech | Finding Flags | 2 | |
| zgd909 | Pad Thai | 80 | |
| UtkarshBabar | Base64 | 10 | |
| mathiasvatnehol | XOR Starter | 10 | |
| hyperkahler | Base64 | 10 | |
| zgd909 | Dancing Queen | 120 | |
| zgd909 | Stream of Consciousness | 80 | |
| zgd909 | Logon Zero | 80 | |
| antony_negr | Hex | 5 | |
| xxvpb51145 | Base64 | 10 | |
| zgd909 | CTRIME | 70 | |
| hyperkahler | Hex | 5 | |
| zgd909 | Bean Counter | 60 | |
| zgd909 | Symmetry | 50 | |
| zgd909 | Triple DES | 60 |
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