| Date | User | Challenge | Score |
| xiangcai | Resisting Bruteforce | 10 | |
| 1433223 | Hex | 5 | |
| ggerod | Deriving Symmetric Keys | 40 | |
| xiangcai | Keyed Permutations | 5 | |
| HappRash | RSA Signatures | 25 | |
| qrq1234 | Finding Flags | 2 | |
| Slight | Structure of AES | 15 | |
| xdxdfyc44 | Resisting Bruteforce | 10 | |
| sean111 | Keyed Permutations | 5 | |
| Arzu | ASCII | 5 | |
| Arzu | Great Snakes | 3 | |
| zhangjia2004 | Great Snakes | 3 | |
| liuchunyan | Great Snakes | 3 | |
| 1Lovef0xy | Quadratic Residues | 25 | |
| sean111 | Resisting Bruteforce | 10 | |
| Arzu | Finding Flags | 2 | |
| dadan | Symmetry | 50 | |
| NEID017 | Resisting Bruteforce | 10 | |
| aaambq | Resisting Bruteforce | 10 | |
| aaambq | Keyed Permutations | 5 | |
| xdxdfyc44 | Keyed Permutations | 5 | |
| NEID017 | Keyed Permutations | 5 | |
| Slight | Resisting Bruteforce | 10 | |
| Slight | Keyed Permutations | 5 | |
| numberFreak | Secure Protocols | 5 | |
| kali44 | RSA Signatures | 25 | |
| CyberSyndrome | Private Keys | 20 | |
| HappRash | RSA Decryption | 20 | |
| CyberSyndrome | Euler's Totient | 20 | |
| HappRash | Private Keys | 20 | |
| 1Lovef0xy | Modular Inverting | 25 | |
| HappRash | Euler's Totient | 20 | |
| HappRash | Public Keys | 15 | |
| emsa | Collider | 50 | |
| gatepad | You either know, XOR you don't | 30 | |
| xavanium | XOR Starter | 10 | |
| gatepad | Favourite byte | 20 | |
| gatepad | XOR Properties | 15 | |
| Gengg_ | Modulus Inutilis | 50 | |
| xavanium | Bytes and Big Integers | 10 | |
| gatepad | XOR Starter | 10 | |
| 1Lovef0xy | Modular Arithmetic 2 | 20 | |
| gatepad | Bytes and Big Integers | 10 | |
| gatepad | Base64 | 10 | |
| xavanium | Base64 | 10 | |
| xavanium | Hex | 5 | |
| gatepad | Hex | 5 | |
| xavanium | ASCII | 5 | |
| xavanium | Great Snakes | 3 | |
| xavanium | Finding Flags | 2 |
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