| Date | User | Challenge | Score |
| ataonder | XOR Properties | 15 | |
| derPinguin | XOR Starter | 10 | |
| derPinguin | Bytes and Big Integers | 10 | |
| spaceman_spiff | Hex | 5 | |
| Alusi | Finding Flags | 2 | |
| djo | Base64 | 10 | |
| ataonder | XOR Starter | 10 | |
| ataonder | Bytes and Big Integers | 10 | |
| ataonder | Base64 | 10 | |
| ataonder | Hex | 5 | |
| ataonder | ASCII | 5 | |
| ataonder | Great Snakes | 3 | |
| ataonder | Finding Flags | 2 | |
| PAWOS | MD0 | 80 | |
| M0xX | Signing Server | 60 | |
| vstav | Great Snakes | 3 | |
| vstav | Finding Flags | 2 | |
| oneor | Legendre Symbol | 35 | |
| M0xX | Crossed Wires | 100 | |
| gradale | Hex | 5 | |
| ZineElAbidineMH | ASCII | 5 | |
| gradale | ASCII | 5 | |
| luckien2492 | Hex | 5 | |
| gradale | Great Snakes | 3 | |
| luckien2492 | ASCII | 5 | |
| gradale | Finding Flags | 2 | |
| skneww | ECB CBC WTF | 55 | |
| ZineElAbidineMH | Great Snakes | 3 | |
| ClaraW | Bringing It All Together | 50 | |
| ClaraW | Diffusion through Permutation | 30 | |
| ZineElAbidineMH | Finding Flags | 2 | |
| ClaraW | Confusion through Substitution | 25 | |
| PAWOS | Hash Stuffing | 50 | |
| ClaraW | Round Keys | 20 | |
| ClaraW | Structure of AES | 15 | |
| admani1 | Bean Counter | 60 | |
| noya | Base64 | 10 | |
| noya | Hex | 5 | |
| ClaraW | Resisting Bruteforce | 10 | |
| admani1 | Symmetry | 50 | |
| ClaraW | Keyed Permutations | 5 | |
| factual117 | Modes of Operation Starter | 15 | |
| noya | ASCII | 5 | |
| admani1 | Flipping Cookie | 60 | |
| admani1 | ECB CBC WTF | 55 | |
| factual117 | Bringing It All Together | 50 | |
| Stephent8gui | Quadratic Residues | 25 | |
| pezdokril | Extended GCD | 20 | |
| zhaopy | Quadratic Residues | 25 | |
| kabanchik_07 | Round Keys | 20 |
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