| Date | User | Challenge | Score |
| jskeob | Broken RSA | 100 | |
| From_air | Bean Counter | 60 | |
| Damienctrt | XOR Starter | 10 | |
| anna_42 | Bean Counter | 60 | |
| norahamu | Quadratic Residues | 25 | |
| pokemon | Finding Flags | 2 | |
| From_air | Symmetry | 50 | |
| anna_42 | Symmetry | 50 | |
| From_air | Triple DES | 60 | |
| dirtyDeedz | Salty | 20 | |
| bankai31337 | Modular Arithmetic 1 | 20 | |
| From_air | ECB Oracle | 60 | |
| From_air | Lazy CBC | 60 | |
| From_air | Flipping Cookie | 60 | |
| From_air | ECB CBC WTF | 55 | |
| Damienctrt | Bytes and Big Integers | 10 | |
| From_air | Passwords as Keys | 50 | |
| dirtyDeedz | Manyprime | 40 | |
| archex | Diffusion through Permutation | 30 | |
| kyuuaditya | Favourite byte | 20 | |
| zyeg | Extended GCD | 20 | |
| crypto_saka_hack | Marin's Secrets | 50 | |
| dirtyDeedz | Square Eyes | 35 | |
| Spectre23 | Hex | 5 | |
| Mikbrosim | Pad Thai | 80 | |
| 2976942164 | Parameter Injection | 60 | |
| From_air | Modes of Operation Starter | 15 | |
| dirtyDeedz | Monoprime | 30 | |
| dirtyDeedz | Inferius Prime | 30 | |
| zhangmengxuan | Computing Public Values | 25 | |
| From_air | Bringing It All Together | 50 | |
| zhangmengxuan | Generators of Groups | 20 | |
| From_air | Diffusion through Permutation | 30 | |
| zhangmengxuan | Working with Fields | 10 | |
| From_air | Confusion through Substitution | 25 | |
| From_air | Round Keys | 20 | |
| zyeg | Greatest Common Divisor | 15 | |
| From_air | Structure of AES | 15 | |
| Gabrielius | You either know, XOR you don't | 30 | |
| From_air | Resisting Bruteforce | 10 | |
| From_air | Keyed Permutations | 5 | |
| neovymp | Checkpoint | 150 | |
| anna_42 | Triple DES | 60 | |
| pueblo2212 | Great Snakes | 3 | |
| dirtyDeedz | Favourite byte | 20 | |
| bankai31337 | Extended GCD | 20 | |
| dirtyDeedz | XOR Properties | 15 | |
| kyuuaditya | XOR Properties | 15 | |
| backpack | Hex | 5 | |
| backpack | ASCII | 5 |
You are now level Current level