| Date | User | Challenge | Score |
| zabieru | Modulus Inutilis | 50 | |
| stellev | Modulus Inutilis | 50 | |
| zabieru | Salty | 20 | |
| zabieru | Manyprime | 40 | |
| ssdis | Hex | 5 | |
| TirthBD | Endless Emails | 150 | |
| stellev | Salty | 20 | |
| ssdis | ASCII | 5 | |
| zabieru | Monoprime | 30 | |
| stellev | RSA Signatures | 25 | |
| luisfelicio | You either know, XOR you don't | 30 | |
| ssdis | Great Snakes | 3 | |
| soul00009999 | Hex | 5 | |
| soul00009999 | ASCII | 5 | |
| rjk976 | XOR Starter | 10 | |
| Raoof_alshawye03 | Great Snakes | 3 | |
| luisfelicio | Favourite byte | 20 | |
| rjk976 | Bytes and Big Integers | 10 | |
| IbnuSaiber1 | Base64 | 10 | |
| Raoof_alshawye03 | Finding Flags | 2 | |
| rjk976 | Base64 | 10 | |
| zabieru | Factoring | 15 | |
| soul00009999 | Great Snakes | 3 | |
| rjk976 | Hex | 5 | |
| luisfelicio | XOR Properties | 15 | |
| rjk976 | ASCII | 5 | |
| martinabaccichet | Token Appreciation | 5 | |
| zabieru | RSA Signatures | 25 | |
| rjk976 | Great Snakes | 3 | |
| martinabaccichet | ASCII | 5 | |
| rjk976 | Finding Flags | 2 | |
| soul00009999 | Finding Flags | 2 | |
| martinabaccichet | Great Snakes | 3 | |
| martinabaccichet | Finding Flags | 2 | |
| FazeCT | Marin's Secrets | 50 | |
| Shunthail | Roll your Own | 125 | |
| luisfelicio | XOR Starter | 10 | |
| goosebud21 | Pad Thai | 80 | |
| zabieru | RSA Decryption | 20 | |
| Gabegotit | Structure of AES | 15 | |
| zabieru | Private Keys | 20 | |
| Gabegotit | Resisting Bruteforce | 10 | |
| int80 | Transparency | 50 | |
| Gabegotit | Keyed Permutations | 5 | |
| nader_khiari | Favourite byte | 20 | |
| zabieru | Euler's Totient | 20 | |
| pljeskavica | Chinese Remainder Theorem | 40 | |
| zabieru | Public Keys | 15 | |
| manuelgonzalezmo | XOR Starter | 10 | |
| Oyar12 | Finding Flags | 2 |
You are now level Current level