| Date | User | Challenge | Score |
| Sai123 | Finding Flags | 2 | |
| atakilti | You either know, XOR you don't | 30 | |
| keydownmonkey | Favourite byte | 20 | |
| NatsuGwada | Modular Arithmetic 1 | 20 | |
| d0lmiodawg | Modes of Operation Starter | 15 | |
| NatsuGwada | Extended GCD | 20 | |
| andrew_h | Modular Arithmetic 2 | 20 | |
| ptmee | ASCII | 5 | |
| jackoha | Beatboxer | 150 | |
| NatsuGwada | Greatest Common Divisor | 15 | |
| d0lmiodawg | Bringing It All Together | 50 | |
| bytenightnether | XOR Properties | 15 | |
| andrew_h | Modular Arithmetic 1 | 20 | |
| nohh022 | ECB Oracle | 60 | |
| dhivyadharshini | Base64 | 10 | |
| dhivyadharshini | Hex | 5 | |
| ptmee | Great Snakes | 3 | |
| ptmee | Finding Flags | 2 | |
| nohh022 | Passwords as Keys | 50 | |
| d0lmiodawg | Diffusion through Permutation | 30 | |
| dhivyadharshini | ASCII | 5 | |
| dhivyadharshini | Great Snakes | 3 | |
| em2294 | Symmetry | 50 | |
| nohh022 | Modes of Operation Starter | 15 | |
| dhivyadharshini | Finding Flags | 2 | |
| thaggs1066 | Blinding Light | 120 | |
| d0lmiodawg | Confusion through Substitution | 25 | |
| jackoha | Forbidden Fruit | 150 | |
| nohh022 | Bringing It All Together | 50 | |
| cbr4l0k | ECB Oracle | 60 | |
| Ah_Crypto2 | Modes of Operation Starter | 15 | |
| d0lmiodawg | Round Keys | 20 | |
| bytenightnether | XOR Starter | 10 | |
| Ah_Crypto2 | Bringing It All Together | 50 | |
| GeorgeAziz | Finding Flags | 2 | |
| testingworldfull | Chinese Remainder Theorem | 40 | |
| ahmedBassiony | Finding Flags | 2 | |
| d0lmiodawg | Structure of AES | 15 | |
| nohh022 | Diffusion through Permutation | 30 | |
| karafaye05 | Base64 | 10 | |
| d0lmiodawg | Resisting Bruteforce | 10 | |
| d0lmiodawg | Keyed Permutations | 5 | |
| daniel77xd_ | Bytes and Big Integers | 10 | |
| Serenity | Collider | 50 | |
| d0lmiodawg | Transparency | 50 | |
| misterwarx | Bytes and Big Integers | 10 | |
| quangtiencu | You either know, XOR you don't | 30 | |
| misterwarx | Base64 | 10 | |
| misterwarx | Hex | 5 | |
| misterwarx | ASCII | 5 |
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