| Date | User | Challenge | Score |
| DEBLEXER | Bytes and Big Integers | 10 | |
| Seventt | Beatboxer | 150 | |
| grizzzer | Generators of Groups | 20 | |
| sixsquareAI | Cipher Mode Picker (HKCERT CTF) | 0 | |
| DEBLEXER | Base64 | 10 | |
| ReitardXd | Network Attacks | 5 | |
| DEBLEXER | Hex | 5 | |
| ayoubaitlaarbi | Private Keys | 20 | |
| Sylvie_fish0 | Hex | 5 | |
| arren | Base64 | 10 | |
| sixsquareAI | Chaos (Zh3r0 CTF V2) | 0 | |
| Sylvie_fish0 | ASCII | 5 | |
| grizzzer | Working with Fields | 10 | |
| MadMad8313 | Finding Flags | 2 | |
| ayoubaitlaarbi | Euler's Totient | 20 | |
| DEBLEXER | ASCII | 5 | |
| Sylvie_fish0 | Finding Flags | 2 | |
| marq | XOR Properties | 15 | |
| arren | Hex | 5 | |
| grizzzer | Modulus Inutilis | 50 | |
| Finiel | Quadratic Residues | 25 | |
| grizzzer | Salty | 20 | |
| grizzzer | Manyprime | 40 | |
| yzfaxx | Finding Flags | 2 | |
| draktr | Base64 | 10 | |
| draktr | Hex | 5 | |
| draktr | ASCII | 5 | |
| grizzzer | Monoprime | 30 | |
| arren | ASCII | 5 | |
| grizzzer | Factoring | 15 | |
| lucy54 | Dancing Queen | 120 | |
| Gaetano | Favourite byte | 20 | |
| draktr | Great Snakes | 3 | |
| draktr | Finding Flags | 2 | |
| marq | XOR Starter | 10 | |
| marq | Encoding Challenge | 40 | |
| TxLast | Symmetry | 50 | |
| Mugac | XOR Properties | 15 | |
| Goldenbeetle | Finding Flags | 2 | |
| kikipaul | Square Eyes | 35 | |
| marq | Bytes and Big Integers | 10 | |
| nandosito | ASCII | 5 | |
| Gaetano | XOR Properties | 15 | |
| nandosito | Great Snakes | 3 | |
| jj24 | Smooth Criminal | 60 | |
| nandosito | Finding Flags | 2 | |
| kikipaul | Monoprime | 30 | |
| Mugac | XOR Starter | 10 | |
| Mark_Korg | Diffusion through Permutation | 30 | |
| Mark_Korg | CERTainly not | 30 |
You are now level Current level