| Date | User | Challenge | Score |
| 4rg0 | Confusion through Substitution | 25 | |
| chai_qweasdzxc | Base64 | 10 | |
| BlueBandit | Greatest Common Divisor | 15 | |
| SigmaMonster | Working with Fields | 10 | |
| Tobisius | Favourite byte | 20 | |
| flail9965 | Bytes and Big Integers | 10 | |
| MacCormaic | RSA Decryption | 20 | |
| L434 | Bytes and Big Integers | 10 | |
| MacCormaic | Private Keys | 20 | |
| MacCormaic | Euler's Totient | 20 | |
| MacCormaic | Public Keys | 15 | |
| MacCormaic | Modular Exponentiation | 10 | |
| SigmaMonster | Modulus Inutilis | 50 | |
| Cyberquantum | Finding Flags | 2 | |
| insot | Bytes and Big Integers | 10 | |
| L434 | Base64 | 10 | |
| GIMJONGUN | Base64 | 10 | |
| 3duhack | Base64 | 10 | |
| L434 | Hex | 5 | |
| chai_qweasdzxc | Hex | 5 | |
| ayman711 | The Good, The Pad, The Ugly | 100 | |
| ayman711 | Pad Thai | 80 | |
| GIMJONGUN | Hex | 5 | |
| ayman711 | Oh SNAP | 120 | |
| ayman711 | Dancing Queen | 120 | |
| ayman711 | Stream of Consciousness | 80 | |
| ayman711 | Logon Zero | 80 | |
| ayman711 | CTRIME | 70 | |
| ayman711 | Bean Counter | 60 | |
| ayman711 | Symmetry | 50 | |
| L434 | ASCII | 5 | |
| ayman711 | Triple DES | 60 | |
| ayman711 | Lazy CBC | 60 | |
| ayman711 | Flipping Cookie | 60 | |
| ayman711 | ECB Oracle | 60 | |
| ayman711 | ECB CBC WTF | 55 | |
| chai_qweasdzxc | ASCII | 5 | |
| SigmaMonster | Salty | 20 | |
| ayman711 | Passwords as Keys | 50 | |
| ayman711 | Modes of Operation Starter | 15 | |
| bartholomew | Base64 | 10 | |
| GIMJONGUN | ASCII | 5 | |
| ayman711 | Confusion through Substitution | 25 | |
| chai_qweasdzxc | Great Snakes | 3 | |
| ayman711 | Round Keys | 20 | |
| ayman711 | Structure of AES | 15 | |
| insot | Base64 | 10 | |
| ayman711 | Resisting Bruteforce | 10 | |
| L434 | Great Snakes | 3 | |
| ayman711 | Keyed Permutations | 5 |
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