| Date | User | Challenge | Score |
| kevinho27 | Bean Counter | 60 | |
| Ayuwandira | Modulus Inutilis | 50 | |
| abhii_ | Great Snakes | 3 | |
| abhii_ | Finding Flags | 2 | |
| Sigmaskat05 | Hex | 5 | |
| Sigmaskat05 | ASCII | 5 | |
| lensens | Base64 | 10 | |
| lensens | Hex | 5 | |
| lensens | ASCII | 5 | |
| Loidx | Quadratic Residues | 25 | |
| hunnter | Triple DES | 60 | |
| kevinho27 | Symmetry | 50 | |
| kevinho27 | Flipping Cookie | 60 | |
| lensens | Great Snakes | 3 | |
| Sigmaskat05 | Great Snakes | 3 | |
| Sigmaskat05 | Finding Flags | 2 | |
| lensens | Finding Flags | 2 | |
| Ayuwandira | Salty | 20 | |
| hunnter | Lazy CBC | 60 | |
| hunnter | Flipping Cookie | 60 | |
| Mikayn | Base64 | 10 | |
| kevinho27 | ECB CBC WTF | 55 | |
| kevinho27 | ECB Oracle | 60 | |
| lieameed | Quadratic Residues | 25 | |
| aunizul | Resisting Bruteforce | 10 | |
| platinumxy | Modular Binomials | 80 | |
| Toadytop | Oracular Spectacular | 150 | |
| aunizul | Keyed Permutations | 5 | |
| platinumxy | Adrien's Signs | 80 | |
| ammilzr1 | Modular Inverting | 25 | |
| aunizul | You either know, XOR you don't | 30 | |
| ammilzr1 | Modular Arithmetic 2 | 20 | |
| aunizul | Favourite byte | 20 | |
| ammilzr1 | Modular Arithmetic 1 | 20 | |
| aunizul | XOR Properties | 15 | |
| ammilzr1 | Extended GCD | 20 | |
| wangfu | Confusion through Substitution | 25 | |
| fentaohe | Encoding Challenge | 40 | |
| aunizul | XOR Starter | 10 | |
| kek9834 | Base64 | 10 | |
| kek9834 | Hex | 5 | |
| kek9834 | ASCII | 5 | |
| ammilzr1 | Greatest Common Divisor | 15 | |
| ammilzr1 | You either know, XOR you don't | 30 | |
| platinumxy | Chinese Remainder Theorem | 40 | |
| kek9834 | Network Attacks | 5 | |
| wangfu | Round Keys | 20 | |
| ammilzr1 | Favourite byte | 20 | |
| spartan8806 | Megalomaniac 2 | 120 | |
| kek9834 | Great Snakes | 3 |
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