| Date | User | Challenge | Score |
| brandonM | Finding Flags | 2 | |
| ofdeat | Finding Flags | 2 | |
| lojainshawky | Modular Arithmetic 1 | 20 | |
| SJacovettiJr | Finding Flags | 2 | |
| shokapikfort | Saying Hello | 20 | |
| Cyberboyka9x7 | Modular Arithmetic 1 | 20 | |
| syndir | Modes of Operation Starter | 15 | |
| Cyberboyka9x7 | Extended GCD | 20 | |
| kora | Bytes and Big Integers | 10 | |
| dXNlcm5hbWU_ | Passwords as Keys | 50 | |
| BearThaRealHe | Flipping Cookie | 60 | |
| simonbgr | Modular Inverting | 25 | |
| aliarkan | You either know, XOR you don't | 30 | |
| Keks0 | Base64 | 10 | |
| dmart297 | Network Attacks | 5 | |
| benfrank | Greatest Common Divisor | 15 | |
| MingLLuo | CTRIME | 70 | |
| dmart297 | Great Snakes | 3 | |
| Keks0 | Hex | 5 | |
| Vic144 | Modular Binomials | 80 | |
| dmart297 | Finding Flags | 2 | |
| aliarkan | Favourite byte | 20 | |
| kora | Base64 | 10 | |
| Keks0 | ASCII | 5 | |
| aliarkan | XOR Properties | 15 | |
| alexjmead | Curves and Logs | 40 | |
| shivamsah | Parameter Injection | 60 | |
| Keks0 | Great Snakes | 3 | |
| Keks0 | Finding Flags | 2 | |
| Matrix | Modular Inverting | 25 | |
| aliarkan | XOR Starter | 10 | |
| xmerlinx | Bytes and Big Integers | 10 | |
| julesfress | Confusion through Substitution | 25 | |
| Amir05 | Base64 | 10 | |
| Matrix | Modular Arithmetic 2 | 20 | |
| bsvac | Let's Decrypt | 80 | |
| xmerlinx | Base64 | 10 | |
| Matrix | Modular Arithmetic 1 | 20 | |
| alexjmead | Scalar Multiplication | 35 | |
| Matrix | Extended GCD | 20 | |
| xmerlinx | Hex | 5 | |
| xmerlinx | ASCII | 5 | |
| xmerlinx | Great Snakes | 3 | |
| Raferior | Bytes and Big Integers | 10 | |
| Matrix | Greatest Common Divisor | 15 | |
| xmerlinx | Finding Flags | 2 | |
| aliarkan | Bytes and Big Integers | 10 | |
| xfnx | Too Honest | 50 | |
| shokapikfort | TLS Handshake | 15 | |
| xfnx | Non-Interactive | 35 |
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