| Date | User | Challenge | Score |
| Utzu_jpg | Hex | 5 | |
| CyberCitizen | Hex | 5 | |
| c0mpos3r99 | XOR Properties | 15 | |
| CyberCitizen | ASCII | 5 | |
| adam_staciwa | RSA Signatures | 25 | |
| Aeneas7 | Endless Emails | 150 | |
| CyberCitizen | Great Snakes | 3 | |
| chchh | Favourite byte | 20 | |
| CyberCitizen | Finding Flags | 2 | |
| Daksh_Mamodiya | Logon Zero | 80 | |
| Pentaquark | JSON in JSON | 40 | |
| eryk1343 | Modes of Operation Starter | 15 | |
| Pentaquark | RSA or HMAC? | 35 | |
| Utzu_jpg | ASCII | 5 | |
| TerezaGr_p22037 | Modular Inverting | 25 | |
| Aeneas7 | Everything is Still Big | 100 | |
| Sakurine | SSH Keys | 35 | |
| Pentaquark | JWT Secrets | 25 | |
| 0xLunar292 | Modulus Inutilis | 50 | |
| adam_staciwa | RSA Decryption | 20 | |
| 0xLunar292 | Salty | 20 | |
| Utzu_jpg | Great Snakes | 3 | |
| crypto_exercise | Favourite byte | 20 | |
| Utzu_jpg | Finding Flags | 2 | |
| adam_staciwa | Private Keys | 20 | |
| 0xLunar292 | Square Eyes | 35 | |
| Panos_Livadaros | Decrypting TLS 1.2 | 30 | |
| shangzhe | Greatest Common Divisor | 15 | |
| chchh | XOR Properties | 15 | |
| adam_staciwa | Euler's Totient | 20 | |
| adam_staciwa | Public Keys | 15 | |
| TerezaGr_p22037 | Modular Arithmetic 2 | 20 | |
| crypto_exercise | XOR Properties | 15 | |
| adam_staciwa | Modular Exponentiation | 10 | |
| eryk1343 | Bringing It All Together | 50 | |
| Pentaquark | Hash Stuffing | 50 | |
| Bitcoin | Modular Arithmetic 2 | 20 | |
| bugzi1 | Hex | 5 | |
| ahmadalnasser | ASCII | 5 | |
| TerezaGr_p22037 | Modular Arithmetic 1 | 20 | |
| hackerpj12 | Transparency | 50 | |
| ahmadalnasser | Great Snakes | 3 | |
| 0xLunar292 | Inferius Prime | 30 | |
| fuwuqi | Base64 | 10 | |
| ahmadalnasser | Finding Flags | 2 | |
| Cerades | Successive Powers | 60 | |
| Cerades | Chinese Remainder Theorem | 40 | |
| Pentaquark | Collider | 50 | |
| Cerades | Quadratic Residues | 25 | |
| CongMinh | Bringing It All Together | 50 |
You are now level Current level