| Date | User | Challenge | Score |
| JGaspar | Bytes and Big Integers | 10 | |
| MF47 | Finding Flags | 2 | |
| FONE | Modular Exponentiation | 10 | |
| pentestmonkey | RSA Signatures | 25 | |
| betterbea | Modular Arithmetic 2 | 20 | |
| Zarif | ASCII | 5 | |
| KK1994 | Favourite byte | 20 | |
| Lan0voy | Resisting Bruteforce | 10 | |
| FONE | Structure of AES | 15 | |
| tanxiaoyan | Transparency | 50 | |
| betterbea | Modular Arithmetic 1 | 20 | |
| JGaspar | Base64 | 10 | |
| Zarif | Great Snakes | 3 | |
| JGaspar | Hex | 5 | |
| Liror | Favourite byte | 20 | |
| FONE | Resisting Bruteforce | 10 | |
| Muthaiah | Flipping Cookie | 60 | |
| JGaspar | ASCII | 5 | |
| FONE | Keyed Permutations | 5 | |
| tanxiaoyan | SSH Keys | 35 | |
| FONE | Network Attacks | 5 | |
| Zarif | Finding Flags | 2 | |
| milanhuddar | Finding Flags | 2 | |
| tanxiaoyan | CERTainly not | 30 | |
| Lan0voy | Keyed Permutations | 5 | |
| tanxiaoyan | Encoding Challenge | 40 | |
| bilal22 | Efficient Exchange | 50 | |
| KK1994 | XOR Properties | 15 | |
| byteme | Resisting Bruteforce | 10 | |
| tanxiaoyan | Privacy-Enhanced Mail? | 25 | |
| richmoneybank479 | Jack's Birthday Confusion | 30 | |
| byteme | Keyed Permutations | 5 | |
| pavel_edits | Greatest Common Divisor | 15 | |
| richmoneybank479 | Jack's Birthday Hash | 20 | |
| Liror | XOR Properties | 15 | |
| betterbea | Extended GCD | 20 | |
| Liror | XOR Starter | 10 | |
| pavel_edits | You either know, XOR you don't | 30 | |
| RotaJakiro | SSH Keys | 35 | |
| Liror | Bytes and Big Integers | 10 | |
| madness57 | Passwords as Keys | 50 | |
| bilal22 | Curves and Logs | 40 | |
| YazNanky | Finding Flags | 2 | |
| pentestmonkey | RSA Decryption | 20 | |
| bilal22 | Scalar Multiplication | 35 | |
| keuyrh | Base64 | 10 | |
| bilal22 | Point Addition | 30 | |
| keuyrh | Hex | 5 | |
| skiller3478 | LWE Low Bits Message | 20 | |
| KK1994 | XOR Starter | 10 |
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