| Date | User | Challenge | Score |
| kz0 | Salty | 20 | |
| gtqx0x | Favourite byte | 20 | |
| rottingbees | Decrypting TLS 1.3 | 35 | |
| Yakuza | Finding Flags | 2 | |
| kz0 | Manyprime | 40 | |
| TTING | Structure of AES | 15 | |
| Ylin | Adrien's Signs | 80 | |
| Hambr | Confusion through Substitution | 25 | |
| TTING | Resisting Bruteforce | 10 | |
| m0x90 | Lemur XOR | 40 | |
| rottingbees | Decrypting TLS 1.2 | 30 | |
| Nxranjan | Bytes and Big Integers | 10 | |
| Hambr | Round Keys | 20 | |
| Nxranjan | Base64 | 10 | |
| rottingbees | Saying Hello | 20 | |
| Nxranjan | Hex | 5 | |
| Hiiamming | Signing Server | 60 | |
| Hambr | Structure of AES | 15 | |
| Nxranjan | ASCII | 5 | |
| thepeashooterfan | You either know, XOR you don't | 30 | |
| ayap0nzu | XOR Properties | 15 | |
| Hambr | Resisting Bruteforce | 10 | |
| Hambr | Keyed Permutations | 5 | |
| rottingbees | TLS Handshake | 15 | |
| rottingbees | Secure Protocols | 5 | |
| rottingbees | Sharks on the Wire | 10 | |
| WissemF1234 | Modes of Operation Starter | 15 | |
| Greenfoxdoesthin | Great Snakes | 3 | |
| panda_ghost | Chinese Remainder Theorem | 40 | |
| Greenfoxdoesthin | Finding Flags | 2 | |
| panda_ghost | Modular Square Root | 35 | |
| sk3pt1c | Endless Emails | 150 | |
| tzhiru | Authenticated Handshake | 40 | |
| kokoko51 | Modular Inverting | 25 | |
| panda_ghost | Legendre Symbol | 35 | |
| Patouvoodoo | Modular Arithmetic 1 | 20 | |
| 0x0nigiri | Modular Arithmetic 2 | 20 | |
| sk3pt1c | Vote for Pedro | 150 | |
| kokoko51 | Modular Arithmetic 2 | 20 | |
| panda_ghost | Quadratic Residues | 25 | |
| sk3pt1c | Blinding Light | 120 | |
| sk3pt1c | Let's Decrypt | 80 | |
| kokoko51 | Modular Arithmetic 1 | 20 | |
| doneyit413 | Modular Binomials | 80 | |
| sk3pt1c | Everything is Still Big | 100 | |
| sk3pt1c | Signing Server | 60 | |
| panda_ghost | Modular Inverting | 25 | |
| panda_ghost | Modular Arithmetic 2 | 20 | |
| kokoko51 | Extended GCD | 20 | |
| panda_ghost | Modular Arithmetic 1 | 20 |
You are now level Current level