| Date | User | Challenge | Score |
| PavithraMuthuvel | Finding Flags | 2 | |
| mohammed_albarkw | Stream of Consciousness | 80 | |
| mohammed_albarkw | Logon Zero | 80 | |
| alinaciu | XOR Properties | 15 | |
| mohammed_albarkw | CTRIME | 70 | |
| mohammed_albarkw | Bean Counter | 60 | |
| mohammed_albarkw | Symmetry | 50 | |
| mohammed_albarkw | Triple DES | 60 | |
| ThinkInTheBox | Mixed Up | 120 | |
| mohammed_albarkw | Lazy CBC | 60 | |
| mohammed_albarkw | Flipping Cookie | 60 | |
| mohammed_albarkw | ECB Oracle | 60 | |
| mohammed_albarkw | ECB CBC WTF | 55 | |
| mohammed_albarkw | Passwords as Keys | 50 | |
| Qasem | PriMeD5 | 100 | |
| mohammed_albarkw | Modes of Operation Starter | 15 | |
| NoName_1234 | Hex | 5 | |
| mencle | Adrien's Signs | 80 | |
| mohammed_albarkw | Bringing It All Together | 50 | |
| NoName_1234 | ASCII | 5 | |
| Qasem | Hash Stuffing | 50 | |
| mohammed_albarkw | Diffusion through Permutation | 30 | |
| mohammed_albarkw | Confusion through Substitution | 25 | |
| NoName_1234 | Great Snakes | 3 | |
| NoName_1234 | Finding Flags | 2 | |
| mohammed_albarkw | Round Keys | 20 | |
| pezdokril | Chinese Remainder Theorem | 40 | |
| mohammed_albarkw | Structure of AES | 15 | |
| khawla1 | Modular Square Root | 35 | |
| estoic_identity | Network Attacks | 5 | |
| mohammed_albarkw | Resisting Bruteforce | 10 | |
| mohammed_albarkw | Keyed Permutations | 5 | |
| alinaciu | XOR Starter | 10 | |
| mindorbit | Hex | 5 | |
| mohammed_albarkw | You either know, XOR you don't | 30 | |
| mohammed_albarkw | Favourite byte | 20 | |
| mindorbit | ASCII | 5 | |
| mohammed_albarkw | XOR Properties | 15 | |
| mindorbit | Great Snakes | 3 | |
| mohammed_albarkw | XOR Starter | 10 | |
| mohammed_albarkw | Bytes and Big Integers | 10 | |
| mohammed_albarkw | Base64 | 10 | |
| khawla1 | Legendre Symbol | 35 | |
| mohammed_albarkw | Hex | 5 | |
| mohammed_albarkw | ASCII | 5 | |
| Dide | Finding Flags | 2 | |
| Qasem | Collider | 50 | |
| mohammed_albarkw | Great Snakes | 3 | |
| mohammed_albarkw | Finding Flags | 2 | |
| svenny | Transparency | 50 |
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