| Date | User | Challenge | Score |
| monstre991 | Base64 | 10 | |
| Hattmakare | Computing Public Values | 25 | |
| LJMT | ASCII | 5 | |
| antiii | XOR Properties | 15 | |
| sdigs | Broken RSA | 100 | |
| STAY | Finding Flags | 2 | |
| mariotronix | Parameter Injection | 60 | |
| landerson_ | Finding Flags | 2 | |
| enomalova | Hex | 5 | |
| aylexandre | Hex | 5 | |
| aylexandre | ASCII | 5 | |
| monstre991 | Hex | 5 | |
| Hattmakare | Generators of Groups | 20 | |
| enomalova | ASCII | 5 | |
| monstre991 | ASCII | 5 | |
| rubber_duck | Diffusion through Permutation | 30 | |
| aylexandre | Great Snakes | 3 | |
| etcetera | Bytes and Big Integers | 10 | |
| enomalova | Great Snakes | 3 | |
| aylexandre | Finding Flags | 2 | |
| enomalova | Finding Flags | 2 | |
| mswadhin | Quadratic Residues | 25 | |
| Dessert | Everything is Big | 70 | |
| nicolejanedelro | Finding Flags | 2 | |
| XXCitzenXX | ASCII | 5 | |
| Yessuu | Finding Flags | 2 | |
| svt | Hex | 5 | |
| wizard101 | Favourite byte | 20 | |
| Jamil601 | Finding Flags | 2 | |
| mariotronix | Deriving Symmetric Keys | 40 | |
| sdigs | Chinese Remainder Theorem | 40 | |
| missmcv | Bytes and Big Integers | 10 | |
| mariotronix | Computing Shared Secrets | 30 | |
| mariotronix | Computing Public Values | 25 | |
| wizard101 | XOR Properties | 15 | |
| monstre991 | Great Snakes | 3 | |
| wizard101 | XOR Starter | 10 | |
| Dessert | Square Eyes | 35 | |
| Chenskie | Merkle Trees | 25 | |
| Chenskie | Invariant | 250 | |
| Chenskie | Mixed Up | 120 | |
| Chenskie | No Difference | 175 | |
| Chenskie | PriMeD5 | 100 | |
| youssef_reda | RSA or HMAC? | 35 | |
| Chenskie | Hash Stuffing | 50 | |
| sdigs | Modular Square Root | 35 | |
| Chenskie | Saying Hello | 20 | |
| Dessert | Inferius Prime | 30 | |
| Chenskie | Sharks on the Wire | 10 | |
| etcetera | Base64 | 10 |
You are now level Current level