| Date | User | Challenge | Score |
| ahmedmario | Export-grade | 100 | |
| ahmedmario | Parameter Injection | 60 | |
| szzaps | CERTainly not | 30 | |
| IKESIRT | Greatest Common Divisor | 15 | |
| ugp6 | Base64 | 10 | |
| szzaps | Transparency | 50 | |
| Keerthan_V | Manyprime | 40 | |
| ugp6 | Hex | 5 | |
| ahmedmario | Deriving Symmetric Keys | 40 | |
| ugp6 | ASCII | 5 | |
| ahmedmario | Working with Fields | 10 | |
| szzaps | Privacy-Enhanced Mail? | 25 | |
| ahmedmario | Modulus Inutilis | 50 | |
| ugp6 | Great Snakes | 3 | |
| ugp6 | Finding Flags | 2 | |
| TinyLean | Everything is Big | 70 | |
| patipol | Encoding Challenge | 40 | |
| ahmedmario | Computing Shared Secrets | 30 | |
| ahmedmario | Computing Public Values | 25 | |
| szzaps | Lemur XOR | 40 | |
| XingLing | XOR Properties | 15 | |
| ahmedmario | Generators of Groups | 20 | |
| liba | Finding Flags | 2 | |
| kaie | Network Attacks | 5 | |
| Banana_Babanana | Monoprime | 30 | |
| szzaps | Encoding Challenge | 40 | |
| ahmedmario | Manyprime | 40 | |
| Banana_Babanana | Inferius Prime | 30 | |
| szzaps | Bean Counter | 60 | |
| szzaps | Symmetry | 50 | |
| szzaps | Flipping Cookie | 60 | |
| George_Weasly | You either know, XOR you don't | 30 | |
| szzaps | ECB CBC WTF | 55 | |
| szzaps | ECB Oracle | 60 | |
| szzaps | Passwords as Keys | 50 | |
| szzaps | Modes of Operation Starter | 15 | |
| ahmedmario | Salty | 20 | |
| emmikat | You either know, XOR you don't | 30 | |
| emmikat | Favourite byte | 20 | |
| szzaps | Bringing It All Together | 50 | |
| emmikat | XOR Properties | 15 | |
| ahmedmario | Monoprime | 30 | |
| emmikat | XOR Starter | 10 | |
| szzaps | Diffusion through Permutation | 30 | |
| emmikat | Bytes and Big Integers | 10 | |
| ahmedmario | Factoring | 15 | |
| szzaps | Confusion through Substitution | 25 | |
| CrispyChip146 | Greatest Common Divisor | 15 | |
| kaie | You either know, XOR you don't | 30 | |
| szzaps | Round Keys | 20 |
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