| Date | User | Challenge | Score |
| galdu | CTRIME | 70 | |
| galdu | Stream of Consciousness | 80 | |
| JuanpaValdes | Hex | 5 | |
| MuniraXudoyberga | Bytes and Big Integers | 10 | |
| galdu | Logon Zero | 80 | |
| jackoha | Special Isogenies | 30 | |
| albeato | RSA Decryption | 20 | |
| Tlacaele1 | Extended GCD | 20 | |
| galdu | Bean Counter | 60 | |
| galdu | Symmetry | 50 | |
| albeato | Private Keys | 20 | |
| JuanpaValdes | ASCII | 5 | |
| galdu | Triple DES | 60 | |
| galdu | Modes of Operation Starter | 15 | |
| galdu | ECB CBC WTF | 55 | |
| albeato | Euler's Totient | 20 | |
| Jerwin07 | You either know, XOR you don't | 30 | |
| galdu | Passwords as Keys | 50 | |
| albeato | Public Keys | 15 | |
| Tlacaele1 | Greatest Common Divisor | 15 | |
| kevgrantman | Adrien's Signs | 80 | |
| galdu | Bringing It All Together | 50 | |
| JuanpaValdes | Great Snakes | 3 | |
| albeato | Modular Exponentiation | 10 | |
| galdu | Structure of AES | 15 | |
| galdu | Round Keys | 20 | |
| FroggyLord | Finding Flags | 2 | |
| galdu | Resisting Bruteforce | 10 | |
| galdu | Keyed Permutations | 5 | |
| chongyelu | Favourite byte | 20 | |
| JuanpaValdes | Finding Flags | 2 | |
| Jerwin07 | Bytes and Big Integers | 10 | |
| jep | Bean Counter | 60 | |
| vqines | Finding Flags | 2 | |
| jep | Symmetry | 50 | |
| Jerwin07 | Base64 | 10 | |
| jep | Flipping Cookie | 60 | |
| Gengg_ | Confusion through Substitution | 25 | |
| jep | ECB CBC WTF | 55 | |
| galdu | Lazy CBC | 60 | |
| galdu | ECB Oracle | 60 | |
| galdu | Flipping Cookie | 60 | |
| davidelchidoxd | Bytes and Big Integers | 10 | |
| Neziak | Finding Flags | 2 | |
| galdu | Diffusion through Permutation | 30 | |
| galdu | Confusion through Substitution | 25 | |
| davidelchidoxd | Base64 | 10 | |
| jackoha | Invariant | 250 | |
| Goligx | Oracular Spectacular | 150 | |
| kzzm | Blinding Light | 120 |
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