| Date | User | Challenge | Score |
| theOM | ASCII | 5 | |
| mohammed111 | ECB CBC WTF | 55 | |
| mohammed111 | Passwords as Keys | 50 | |
| mohammed111 | Modes of Operation Starter | 15 | |
| mohammed111 | Diffusion through Permutation | 30 | |
| mohammed111 | Confusion through Substitution | 25 | |
| mohammed111 | Round Keys | 20 | |
| mohammed111 | Structure of AES | 15 | |
| mohammed111 | Resisting Bruteforce | 10 | |
| mohammed111 | Keyed Permutations | 5 | |
| mohammed111 | RSA Signatures | 25 | |
| mohammed111 | RSA Decryption | 20 | |
| mohammed111 | Private Keys | 20 | |
| mohammed111 | Euler's Totient | 20 | |
| mohammed111 | Public Keys | 15 | |
| mohammed111 | Modular Exponentiation | 10 | |
| mohammed111 | You either know, XOR you don't | 30 | |
| mohammed111 | Favourite byte | 20 | |
| LoreK_ | Lazy CBC | 60 | |
| mohammed111 | XOR Properties | 15 | |
| jimun | Lemur XOR | 40 | |
| mohammed111 | XOR Starter | 10 | |
| mohammed111 | Bytes and Big Integers | 10 | |
| mohammed111 | Base64 | 10 | |
| mohammed111 | Hex | 5 | |
| mohammed111 | ASCII | 5 | |
| mohammed111 | Great Snakes | 3 | |
| mohammed111 | Finding Flags | 2 | |
| strikeout | Bringing It All Together | 50 | |
| absoluteal | Bytes and Big Integers | 10 | |
| theOM | Great Snakes | 3 | |
| absoluteal | Base64 | 10 | |
| wartervsa | Bytes and Big Integers | 10 | |
| regne | You either know, XOR you don't | 30 | |
| jimun | Encoding Challenge | 40 | |
| theOM | Finding Flags | 2 | |
| LeH | Finding Flags | 2 | |
| Nochi | XOR Starter | 10 | |
| strikeout | Diffusion through Permutation | 30 | |
| wartervsa | Base64 | 10 | |
| Nochi | Bytes and Big Integers | 10 | |
| Abdulkrim | The Good, The Pad, The Ugly | 100 | |
| wartervsa | Hex | 5 | |
| ThinkInTheBox | Noise Cheap | 90 | |
| Renton | ASCII | 5 | |
| strikeout | Confusion through Substitution | 25 | |
| rabah | Background Reading | 5 | |
| Abdulkrim | Pad Thai | 80 | |
| LoreK_ | Flipping Cookie | 60 | |
| R3roooo | Beatboxer | 150 |
You are now level Current level