| Date | User | Challenge | Score |
| HMS_Unicorn | Finding Flags | 2 | |
| lftroq | Lemur XOR | 40 | |
| Lillian | Hex | 5 | |
| chessiebobs | Favourite byte | 20 | |
| chessiebobs | XOR Properties | 15 | |
| NguyenDuc | Keyed Permutations | 5 | |
| Ikamos | Bytes and Big Integers | 10 | |
| chessiebobs | XOR Starter | 10 | |
| oizoioi | Hex | 5 | |
| bejurla | Modular Arithmetic 2 | 20 | |
| sangph2612 | Euler's Totient | 20 | |
| chessiebobs | Bytes and Big Integers | 10 | |
| NguyenDuc | Network Attacks | 5 | |
| Lillian | ASCII | 5 | |
| chessiebobs | Base64 | 10 | |
| sangph2612 | Public Keys | 15 | |
| chessiebobs | Hex | 5 | |
| chessiebobs | ASCII | 5 | |
| chessiebobs | Great Snakes | 3 | |
| Shadow4011 | Great Snakes | 3 | |
| NguyenDuc | Great Snakes | 3 | |
| sangph2612 | Modular Exponentiation | 10 | |
| oizoioi | ASCII | 5 | |
| bejurla | Modular Arithmetic 1 | 20 | |
| NguyenDuc | Finding Flags | 2 | |
| PalMan | Finding Flags | 2 | |
| oizoioi | Great Snakes | 3 | |
| Lilinta | Network Attacks | 5 | |
| covertik | ASCII | 5 | |
| CallMaNam3_ | Hex | 5 | |
| Ikamos | Base64 | 10 | |
| Ikamos | Hex | 5 | |
| oizoioi | Finding Flags | 2 | |
| CallMaNam3_ | ASCII | 5 | |
| Ikamos | ASCII | 5 | |
| karlacrypto | RSA Decryption | 20 | |
| karlacrypto | Private Keys | 20 | |
| karlacrypto | Euler's Totient | 20 | |
| covertik | Great Snakes | 3 | |
| Shadow4011 | Finding Flags | 2 | |
| karlacrypto | Public Keys | 15 | |
| covertik | Finding Flags | 2 | |
| Ikamos | Great Snakes | 3 | |
| lftroq | You either know, XOR you don't | 30 | |
| Ikamos | Finding Flags | 2 | |
| karlacrypto | Modular Exponentiation | 10 | |
| ngynmq | Moving Problems | 150 | |
| tup01ris | Static Client 2 | 120 | |
| prt_tm_phlsphr | Keyed Permutations | 5 | |
| Biswas | XOR Starter | 10 |
You are now level Current level