| Date | User | Challenge | Score |
| zigzager | Network Attacks | 5 | |
| beaten | Dancing Queen | 120 | |
| g4dZ0r | Modular Square Root | 35 | |
| RisingSun | Resisting Bruteforce | 10 | |
| tj520 | Round Keys | 20 | |
| archex | Structure of AES | 15 | |
| beaten | Stream of Consciousness | 80 | |
| tj520 | Structure of AES | 15 | |
| tj520 | The j-invariant | 20 | |
| tj520 | LWE Intro | 10 | |
| ahmedkamdil | You either know, XOR you don't | 30 | |
| tj520 | LWE Background | 5 | |
| eeve5 | Favourite byte | 20 | |
| beaten | Logon Zero | 80 | |
| beaten | CTRIME | 70 | |
| RisingSun | Keyed Permutations | 5 | |
| tj520 | Gram Schmidt | 30 | |
| rogdawg84 | Finding Flags | 2 | |
| beaten | Bean Counter | 60 | |
| tj520 | Size and Basis | 15 | |
| tj520 | Vectors | 10 | |
| polybius | Hex | 5 | |
| beaten | Symmetry | 50 | |
| canoraks | JSON in JSON | 40 | |
| beaten | Triple DES | 60 | |
| RisingSun | You either know, XOR you don't | 30 | |
| Be_Ria1 | Modular Binomials | 80 | |
| schocher | Base64 | 10 | |
| beaten | Lazy CBC | 60 | |
| tj520 | Salty | 20 | |
| ahmedkamdil | Favourite byte | 20 | |
| beaten | Flipping Cookie | 60 | |
| beaten | ECB Oracle | 60 | |
| RisingSun | Favourite byte | 20 | |
| dec256 | CTRIME | 70 | |
| beaten | ECB CBC WTF | 55 | |
| RisingSun | XOR Properties | 15 | |
| beaten | Passwords as Keys | 50 | |
| bro31813 | Legendre Symbol | 35 | |
| Askadu | Modular Arithmetic 2 | 20 | |
| beaten | Modes of Operation Starter | 15 | |
| tj520 | Square Eyes | 35 | |
| eeve5 | XOR Properties | 15 | |
| beaten | Bringing It All Together | 50 | |
| g4dZ0r | Legendre Symbol | 35 | |
| lovingmachine3 | Base64 | 10 | |
| tj520 | Monoprime | 30 | |
| Yacien | Base64 | 10 | |
| RisingSun | XOR Starter | 10 | |
| archex | Resisting Bruteforce | 10 |
You are now level Current level