| Date | User | Challenge | Score |
| TEK0 | Great Snakes | 3 | |
| TEK0 | Finding Flags | 2 | |
| pokiTS | Ellipse Curve Cryptography | 125 | |
| Lamb2202 | Round Keys | 20 | |
| viktordcrt | XOR Starter | 10 | |
| kangenha | Passwords as Keys | 50 | |
| Asterix22 | Quadratic Residues | 25 | |
| LeeKangHy | Null or Never | 100 | |
| kangenha | Modes of Operation Starter | 15 | |
| User0069 | Non-Interactive | 35 | |
| Lamb2202 | Structure of AES | 15 | |
| CoolMan176 | Base64 | 10 | |
| LeeWangWy | Null or Never | 100 | |
| nsbank | Flipping Cookie | 60 | |
| vizz | Adrien's Signs | 80 | |
| JazziumRum | Modular Arithmetic 1 | 20 | |
| pokiTS | No Way Back Home | 100 | |
| nurminen | Mister Saplin's Preview | 80 | |
| JazziumRum | Extended GCD | 20 | |
| shayklein | Extended GCD | 20 | |
| CoolMan176 | Hex | 5 | |
| viktordcrt | Bytes and Big Integers | 10 | |
| emanelmogy | Favourite byte | 20 | |
| unsafefn | XOR Starter | 10 | |
| pokiTS | Transparency | 50 | |
| aprihel | Chinese Remainder Theorem | 40 | |
| aprihel | Modular Square Root | 35 | |
| emanelmogy | XOR Properties | 15 | |
| unsafefn | Bytes and Big Integers | 10 | |
| pokiTS | SSH Keys | 35 | |
| swViking | Real Eisenstein | 150 | |
| unsafefn | Base64 | 10 | |
| kangenha | Bringing It All Together | 50 | |
| Lamb2202 | Resisting Bruteforce | 10 | |
| aprihel | Legendre Symbol | 35 | |
| CoolMan176 | ASCII | 5 | |
| unsafefn | Hex | 5 | |
| unsafefn | ASCII | 5 | |
| abiii_1027 | You either know, XOR you don't | 30 | |
| unsafefn | Great Snakes | 3 | |
| Lamb2202 | Keyed Permutations | 5 | |
| unsafefn | Finding Flags | 2 | |
| quangntenemy | Oracular Spectacular | 150 | |
| y0dam4n | Static Client | 100 | |
| CoolMan176 | Great Snakes | 3 | |
| nsbank | ECB Oracle | 60 | |
| emanelmogy | XOR Starter | 10 | |
| Aethelis | You either know, XOR you don't | 30 | |
| hize | Network Attacks | 5 | |
| admingirly | Finding Flags | 2 |
You are now level Current level