| Date | User | Challenge | Score |
| tudaiobratno | Modes of Operation Starter | 15 | |
| snowlight | Adrien's Signs | 80 | |
| dispossable | RSA Signatures | 25 | |
| shurayz | JWT Sessions | 10 | |
| manasvoid | Hex | 5 | |
| shurayz | Token Appreciation | 5 | |
| shurayz | SSH Keys | 35 | |
| manasvoid | ASCII | 5 | |
| sma11pi9 | Diffusion through Permutation | 30 | |
| manasvoid | Great Snakes | 3 | |
| fidaj61461 | Great Snakes | 3 | |
| manasvoid | Finding Flags | 2 | |
| fidaj61461 | Finding Flags | 2 | |
| ewhite | Bytes and Big Integers | 10 | |
| Layailers | ECB CBC WTF | 55 | |
| dispossable | RSA Decryption | 20 | |
| Layailers | ECB Oracle | 60 | |
| yoavsasi | Diffusion through Permutation | 30 | |
| yoavsasi | Confusion through Substitution | 25 | |
| cafekao | You either know, XOR you don't | 30 | |
| dispossable | Private Keys | 20 | |
| yoavsasi | Round Keys | 20 | |
| zypangee | Favourite byte | 20 | |
| Steyrer187 | Confusion through Substitution | 25 | |
| Chritzt | Confusion through Substitution | 25 | |
| yoavsasi | Structure of AES | 15 | |
| Vichu | Bytes and Big Integers | 10 | |
| yoavsasi | Resisting Bruteforce | 10 | |
| zypangee | XOR Properties | 15 | |
| yoavsasi | Keyed Permutations | 5 | |
| dispossable | Euler's Totient | 20 | |
| Steyrer187 | Round Keys | 20 | |
| Chritzt | Round Keys | 20 | |
| Vichu | Base64 | 10 | |
| Vichu | Hex | 5 | |
| ewhite | Base64 | 10 | |
| Vichu | ASCII | 5 | |
| zypangee | XOR Starter | 10 | |
| Vichu | Great Snakes | 3 | |
| Vichu | Finding Flags | 2 | |
| Vichu | Network Attacks | 5 | |
| dispossable | Public Keys | 15 | |
| Dishankov | Extended GCD | 20 | |
| sma11pi9 | Confusion through Substitution | 25 | |
| dispossable | Modular Exponentiation | 10 | |
| zypangee | Bytes and Big Integers | 10 | |
| ewhite | Hex | 5 | |
| Steyrer187 | Structure of AES | 15 | |
| Chritzt | Structure of AES | 15 | |
| Dishankov | Greatest Common Divisor | 15 |
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