| Date | User | Challenge | Score |
| v1ct1g3r | Bytes and Big Integers | 10 | |
| mcgoo | Finding Flags | 2 | |
| aaanomy | Common Ground | 75 | |
| srbstar24 | XOR Starter | 10 | |
| david560 | Bean Counter | 60 | |
| srbstar24 | Bytes and Big Integers | 10 | |
| david560 | Symmetry | 50 | |
| srbstar24 | Base64 | 10 | |
| srbstar24 | Hex | 5 | |
| zrm9901 | XOR Properties | 15 | |
| Neobeo | Seventy-Two | 50 | |
| barrapuda | Modular Square Root | 35 | |
| AraMendez | Structure of AES | 15 | |
| mej | Resisting Bruteforce | 10 | |
| almas_2276 | Great Snakes | 3 | |
| zrm9901 | XOR Starter | 10 | |
| almas_2276 | Finding Flags | 2 | |
| qtestpegasus | Finding Flags | 2 | |
| Cameron | Greatest Common Divisor | 15 | |
| zrm9901 | Bytes and Big Integers | 10 | |
| qtestpegasus | Background Reading | 5 | |
| v1ct1g3r | Base64 | 10 | |
| zrm9901 | Base64 | 10 | |
| zrm9901 | Hex | 5 | |
| zrm9901 | ASCII | 5 | |
| v1ct1g3r | Hex | 5 | |
| zrm9901 | Great Snakes | 3 | |
| mej | Keyed Permutations | 5 | |
| zrm9901 | Finding Flags | 2 | |
| david560 | Flipping Cookie | 60 | |
| AraMendez | Resisting Bruteforce | 10 | |
| v1ct1g3r | ASCII | 5 | |
| v1ct1g3r | Great Snakes | 3 | |
| v1ct1g3r | Finding Flags | 2 | |
| 0xcrypt1c | Finding Flags | 2 | |
| david560 | ECB CBC WTF | 55 | |
| david560 | ECB Oracle | 60 | |
| alo04 | Modes of Operation Starter | 15 | |
| neggar123 | RSA Decryption | 20 | |
| neggar123 | Private Keys | 20 | |
| david560 | Passwords as Keys | 50 | |
| stellev | Quadratic Residues | 25 | |
| 0xzaika | You either know, XOR you don't | 30 | |
| alo04 | Bringing It All Together | 50 | |
| AraMendez | Keyed Permutations | 5 | |
| kelejichi | Curves and Logs | 40 | |
| redcrayola | You either know, XOR you don't | 30 | |
| RababBMH | You either know, XOR you don't | 30 | |
| alo04 | Diffusion through Permutation | 30 | |
| 0xzaika | Favourite byte | 20 |
You are now level Current level