| Date | User | Challenge | Score |
| maxtrap | Greatest Common Divisor | 15 | |
| Birb_3 | XOR Properties | 15 | |
| Hiiii | Great Snakes | 3 | |
| RAKMI | ASCII | 5 | |
| mins106 | Legendre Symbol | 35 | |
| tratpop | Finding Flags | 2 | |
| RAKMI | Great Snakes | 3 | |
| RAKMI | Finding Flags | 2 | |
| abdch | Finding Flags | 2 | |
| Birb_3 | XOR Starter | 10 | |
| Birb_3 | Bytes and Big Integers | 10 | |
| abdch | Greatest Common Divisor | 15 | |
| Birb_3 | Base64 | 10 | |
| Birb_3 | Hex | 5 | |
| Birb_3 | ASCII | 5 | |
| Birb_3 | Great Snakes | 3 | |
| Birb_3 | Finding Flags | 2 | |
| hakka52 | Honest Verifier Zero Knowledge | 30 | |
| hakka52 | Special Soundness | 25 | |
| dasa | Hex | 5 | |
| dasa | ASCII | 5 | |
| dasa | Great Snakes | 3 | |
| dasa | Finding Flags | 2 | |
| Niang_Hamza | You either know, XOR you don't | 30 | |
| Kazee | Base64 | 10 | |
| Kazee | Hex | 5 | |
| Kazee | ASCII | 5 | |
| AP2451 | Finding Flags | 2 | |
| AironVzcr | Encoding Challenge | 40 | |
| Z4ME | You either know, XOR you don't | 30 | |
| Mai110moun | XOR Starter | 10 | |
| fucla | Passwords as Keys | 50 | |
| Mai110moun | Bytes and Big Integers | 10 | |
| Mai110moun | Base64 | 10 | |
| Mai110moun | Hex | 5 | |
| Mai110moun | ASCII | 5 | |
| Mai110moun | Great Snakes | 3 | |
| Z4ME | Favourite byte | 20 | |
| Mai110moun | Finding Flags | 2 | |
| Z10UD1 | Transparency | 50 | |
| Z10UD1 | SSH Keys | 35 | |
| Niang_Hamza | Favourite byte | 20 | |
| Z10UD1 | CERTainly not | 30 | |
| fucla | Modes of Operation Starter | 15 | |
| fucla | Bringing It All Together | 50 | |
| Z10UD1 | Privacy-Enhanced Mail? | 25 | |
| Niang_Hamza | XOR Properties | 15 | |
| AironVzcr | Bytes and Big Integers | 10 | |
| scriptboyi | Bringing It All Together | 50 | |
| b1b00www | Secure Protocols | 5 |
You are now level Current level