| Date | User | Challenge | Score |
| ecko309 | Base64 | 10 | |
| eloupace | Hex | 5 | |
| aabhash_gautam10 | Symmetry | 50 | |
| Anilshah | Modular Inverting | 25 | |
| Wienerboy | Hex | 5 | |
| Legend_18 | Bytes and Big Integers | 10 | |
| eloupace | ASCII | 5 | |
| eloupace | Great Snakes | 3 | |
| HackingWalross | Favourite byte | 20 | |
| eloupace | Finding Flags | 2 | |
| ValeriaSm7329 | Modular Arithmetic 2 | 20 | |
| Anilshah | Modular Arithmetic 2 | 20 | |
| Legend_18 | Base64 | 10 | |
| DaRl1nge | Adrien's Signs | 80 | |
| S4pr1sti | XOR Starter | 10 | |
| Sadin | Greatest Common Divisor | 15 | |
| Wienerboy | ASCII | 5 | |
| Anilshah | Modular Arithmetic 1 | 20 | |
| HackingWalross | XOR Properties | 15 | |
| Anilshah | Extended GCD | 20 | |
| Asim_kk | Modes of Operation Starter | 15 | |
| Legend_18 | Hex | 5 | |
| ecko309 | Hex | 5 | |
| Wienerboy | Great Snakes | 3 | |
| ecko309 | ASCII | 5 | |
| Kellie_Atina | Greatest Common Divisor | 15 | |
| Asim_kk | Bringing It All Together | 50 | |
| Asim_kk | Diffusion through Permutation | 30 | |
| nguoihocmoi | Finding Flags | 2 | |
| Asim_kk | Confusion through Substitution | 25 | |
| Legend_18 | ASCII | 5 | |
| Wienerboy | Finding Flags | 2 | |
| Asim_kk | Round Keys | 20 | |
| mm302 | Resisting Bruteforce | 10 | |
| SwatSecOne | Prime and Prejudice | 200 | |
| ecko309 | Great Snakes | 3 | |
| SwatSecOne | Real Eisenstein | 150 | |
| SwatSecOne | Cofactor Cofantasy | 150 | |
| SwatSecOne | Unencryptable | 125 | |
| ecko309 | Finding Flags | 2 | |
| S4pr1sti | Bytes and Big Integers | 10 | |
| Asim_kk | Structure of AES | 15 | |
| SwatSecOne | Roll your Own | 125 | |
| SwatSecOne | Ellipse Curve Cryptography | 125 | |
| SwatSecOne | No Way Back Home | 100 | |
| SwatSecOne | Broken RSA | 100 | |
| SwatSecOne | Successive Powers | 60 | |
| Asim_kk | Resisting Bruteforce | 10 | |
| Asim_kk | Keyed Permutations | 5 | |
| Legend_18 | Great Snakes | 3 |
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