| Date | User | Challenge | Score |
| cryptohlithia | SSH Keys | 35 | |
| idokeren | Finding Flags | 2 | |
| AESpider | Couples | 100 | |
| baz6year | Finding Flags | 2 | |
| Bieee_2727 | Base64 | 10 | |
| JoH86 | Hex | 5 | |
| Shakib86 | You either know, XOR you don't | 30 | |
| 0xea22 | XOR Starter | 10 | |
| Shakib86 | Favourite byte | 20 | |
| _yahia | ASCII | 5 | |
| Shakib86 | XOR Properties | 15 | |
| _yahia | Great Snakes | 3 | |
| _yahia | Finding Flags | 2 | |
| JoH86 | ASCII | 5 | |
| linger | Favourite byte | 20 | |
| Shakib86 | XOR Starter | 10 | |
| southernsoprano | Base64 | 10 | |
| Quitian90 | Finding Flags | 2 | |
| Shakib86 | Bytes and Big Integers | 10 | |
| A2RU | Let's Prove It | 120 | |
| UIT | Deriving Symmetric Keys | 40 | |
| jinkun | Flipping Cookie | 60 | |
| toufiq_hasan | You either know, XOR you don't | 30 | |
| toufiq_hasan | XOR Properties | 15 | |
| toufiq_hasan | Bytes and Big Integers | 10 | |
| Shakib86 | Base64 | 10 | |
| alm | You either know, XOR you don't | 30 | |
| Shakib86 | Hex | 5 | |
| JenseenKai_Yu | Quadratic Residues | 25 | |
| arsh0 | Monoprime | 30 | |
| Shakib86 | ASCII | 5 | |
| A2RU | Let's Prove It Again | 175 | |
| Shakib86 | Great Snakes | 3 | |
| toufiq_hasan | Favourite byte | 20 | |
| toufiq_hasan | XOR Starter | 10 | |
| Shakib86 | Finding Flags | 2 | |
| southernsoprano | Hex | 5 | |
| alm | Favourite byte | 20 | |
| toufiq_hasan | Network Attacks | 5 | |
| hasuke | Parameter Injection | 60 | |
| southernsoprano | ASCII | 5 | |
| leopoldofr | Modular Inverting | 25 | |
| toufiq_hasan | Base64 | 10 | |
| toufiq_hasan | Hex | 5 | |
| southernsoprano | Great Snakes | 3 | |
| southernsoprano | Finding Flags | 2 | |
| leopoldofr | Modular Arithmetic 2 | 20 | |
| JenseenKai_Yu | Modular Inverting | 25 | |
| 0xea22 | Bytes and Big Integers | 10 | |
| alm | XOR Properties | 15 |
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