| Date | User | Challenge | Score |
| cry | Network Attacks | 5 | |
| squ4r00t | Jack's Birthday Confusion | 30 | |
| HexFud | Bytes and Big Integers | 10 | |
| CraigNur | You either know, XOR you don't | 30 | |
| genranglnhh | Everything is Big | 70 | |
| HexFud | Base64 | 10 | |
| 0xh3b3 | ASCII | 5 | |
| johnnymagureanu2 | Finding Flags | 2 | |
| muhammedhamadia | Resisting Bruteforce | 10 | |
| HexFud | Hex | 5 | |
| HexFud | ASCII | 5 | |
| FLU | Great Snakes | 3 | |
| FLU | Finding Flags | 2 | |
| vebandsder | Favourite byte | 20 | |
| muhammedhamadia | Keyed Permutations | 5 | |
| LTaki | ECB Oracle | 60 | |
| 0xh3b3 | Great Snakes | 3 | |
| vebandsder | XOR Properties | 15 | |
| PIKO9546 | Round Keys | 20 | |
| CraigNur | Favourite byte | 20 | |
| squ4r00t | Jack's Birthday Hash | 20 | |
| doublejue | Working with Fields | 10 | |
| 0xh3b3 | Finding Flags | 2 | |
| PIKO9546 | Structure of AES | 15 | |
| genranglnhh | Modulus Inutilis | 50 | |
| eftaniaa | Lemur XOR | 40 | |
| PIKO9546 | Resisting Bruteforce | 10 | |
| miksquared | ProSign 3 | 100 | |
| eftaniaa | You either know, XOR you don't | 30 | |
| PIKO9546 | Keyed Permutations | 5 | |
| sadikuzzamantare | XOR Starter | 10 | |
| genranglnhh | Salty | 20 | |
| rodeo | Bytes and Big Integers | 10 | |
| eftaniaa | Favourite byte | 20 | |
| Sayge | Generators of Groups | 20 | |
| rodeo | Base64 | 10 | |
| eftaniaa | XOR Properties | 15 | |
| rodeo | Hex | 5 | |
| eftaniaa | XOR Starter | 10 | |
| PIKO9546 | Chinese Remainder Theorem | 40 | |
| Inkius | Saying Hello | 20 | |
| LashaG | Background Reading | 5 | |
| doublejue | Modulus Inutilis | 50 | |
| eftaniaa | Bytes and Big Integers | 10 | |
| Inkius | TLS Handshake | 15 | |
| aboj | Resisting Bruteforce | 10 | |
| JANNTUN_NAYEM | Great Snakes | 3 | |
| stonebreaker | No Leaks | 100 | |
| aboj | Keyed Permutations | 5 | |
| Sfere | Great Snakes | 3 |
You are now level Current level