| Date | User | Challenge | Score |
| rida | ECB CBC WTF | 55 | |
| nydonidd | ASCII | 5 | |
| alizak14 | ECB CBC WTF | 55 | |
| nydonidd | Great Snakes | 3 | |
| Danou | Great Snakes | 3 | |
| nydonidd | Finding Flags | 2 | |
| Danou | Finding Flags | 2 | |
| moi_c_sam | Round Keys | 20 | |
| AVKalon | ASCII | 5 | |
| rex_ | Passwords as Keys | 50 | |
| moi_c_sam | Structure of AES | 15 | |
| alizak14 | Passwords as Keys | 50 | |
| GameCity | Great Snakes | 3 | |
| GameCity | Finding Flags | 2 | |
| tode | Modular Square Root | 35 | |
| ashermkn1 | No Leaks | 100 | |
| ashermkn1 | Gotta Go Fast | 40 | |
| mari00 | Modular Arithmetic 1 | 20 | |
| rex_ | Modes of Operation Starter | 15 | |
| raihri | Public Keys | 15 | |
| ashermkn1 | Sharks on the Wire | 10 | |
| ruma | Finding Flags | 2 | |
| ashermkn1 | Secure Protocols | 5 | |
| raihri | Modular Exponentiation | 10 | |
| raihri | CERTainly not | 30 | |
| rex_ | Bringing It All Together | 50 | |
| ashermkn1 | No Way Back Home | 100 | |
| madampresident | Network Attacks | 5 | |
| Z3VS | Base64 | 10 | |
| raihri | Privacy-Enhanced Mail? | 25 | |
| Z3VS | Hex | 5 | |
| madampresident | Great Snakes | 3 | |
| madampresident | Finding Flags | 2 | |
| alizak14 | Modes of Operation Starter | 15 | |
| alzzz | Legendre Symbol | 35 | |
| Z3VS | ASCII | 5 | |
| ASDA | Finding Flags | 2 | |
| ArkadiyParavozov | Diffusion through Permutation | 30 | |
| rex_ | Diffusion through Permutation | 30 | |
| aboateng124 | Modular Square Root | 35 | |
| Z3VS | Great Snakes | 3 | |
| AVKalon | Great Snakes | 3 | |
| bicoiu | Greatest Common Divisor | 15 | |
| AVKalon | Finding Flags | 2 | |
| Aethelis | Modular Square Root | 35 | |
| ArkadiyParavozov | Confusion through Substitution | 25 | |
| incarcius | XOR Starter | 10 | |
| Kronyx | Base64 | 10 | |
| ashermkn1 | Signing Server | 60 | |
| LittleHacker | Base64 | 10 |
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