| Date | User | Challenge | Score |
| 0xluffy | Bytes and Big Integers | 10 | |
| mariannaf | Favourite byte | 20 | |
| Valcia | ASCII | 5 | |
| TNman | XOR Properties | 15 | |
| 50cenh | Point Negation | 10 | |
| sebseb10 | Point Negation | 10 | |
| glowbutt | Point Negation | 10 | |
| gloww | Point Negation | 10 | |
| Crumb | Extended GCD | 20 | |
| MrNught | Adrien's Signs | 80 | |
| Terryanne | Base64 | 10 | |
| gloww | Background Reading | 5 | |
| 25521051 | Logon Zero | 80 | |
| 50cenh | Background Reading | 5 | |
| 0xluffy | Base64 | 10 | |
| Anivia_Jeremia | Confusion through Substitution | 25 | |
| BADWARE | Passwords as Keys | 50 | |
| nullbyte0x00 | Monoprime | 30 | |
| 25521051 | CTRIME | 70 | |
| hexling | Background Reading | 5 | |
| TNman | XOR Starter | 10 | |
| 2134dsa | Legendre Symbol | 35 | |
| shonix | Background Reading | 5 | |
| Mad_scientist | Base64 | 10 | |
| Anivia_Jeremia | Round Keys | 20 | |
| 0xluffy | Hex | 5 | |
| Terryanne | Hex | 5 | |
| sebseb10 | Background Reading | 5 | |
| Anivia_Jeremia | Structure of AES | 15 | |
| CodeFlea | Resisting Bruteforce | 10 | |
| glowbutt | Background Reading | 5 | |
| 0xluffy | ASCII | 5 | |
| 0xluffy | Great Snakes | 3 | |
| TNman | Bytes and Big Integers | 10 | |
| rishig007 | Network Attacks | 5 | |
| BADWARE | Modes of Operation Starter | 15 | |
| SF | You either know, XOR you don't | 30 | |
| 0xluffy | Finding Flags | 2 | |
| kdawg67 | Great Snakes | 3 | |
| Terryanne | ASCII | 5 | |
| Pabloworkeryappi | Modular Inverting | 25 | |
| martenerik | XOR Starter | 10 | |
| masont | Base64 | 10 | |
| rishig007 | Great Snakes | 3 | |
| lnsensenig06 | Hex | 5 | |
| Eliud_O | ASCII | 5 | |
| Terryanne | Great Snakes | 3 | |
| rishig007 | Finding Flags | 2 | |
| TNman | Base64 | 10 | |
| SF | Favourite byte | 20 |
You are now level Current level