| Date | User | Challenge | Score |
| LamaAboSh | Infinite Descent | 50 | |
| GvanGReaper | Broken RSA | 100 | |
| UncleScr00ge | Favourite byte | 20 | |
| TeoKech | Passwords as Keys | 50 | |
| Mitas30 | RSA Decryption | 20 | |
| LoftyCheese | You either know, XOR you don't | 30 | |
| Mitas30 | Private Keys | 20 | |
| UncleScr00ge | XOR Properties | 15 | |
| Mitas30 | Euler's Totient | 20 | |
| AlanJS | Lazy CBC | 60 | |
| UncleScr00ge | XOR Starter | 10 | |
| Mitas30 | Public Keys | 15 | |
| panhrist | Quadratic Residues | 25 | |
| UncleScr00ge | Encoding Challenge | 40 | |
| Mitas30 | Modular Exponentiation | 10 | |
| Yosof_72 | Everything is Still Big | 100 | |
| panhrist | Modular Inverting | 25 | |
| panhrist | Modular Arithmetic 2 | 20 | |
| panhrist | Modular Arithmetic 1 | 20 | |
| shineyjanuary | Flipping Cookie | 60 | |
| LamaAboSh | Crossed Wires | 100 | |
| panhrist | Extended GCD | 20 | |
| TeoKech | Monoprime | 30 | |
| Adem0 | Modular Binomials | 80 | |
| Yosof_72 | Crossed Wires | 100 | |
| helent | Modular Inverting | 25 | |
| karellum | ASCII | 5 | |
| shachar125 | Greatest Common Divisor | 15 | |
| LamaAboSh | Everything is Big | 70 | |
| LamaAboSh | Modulus Inutilis | 50 | |
| shachar125 | You either know, XOR you don't | 30 | |
| UncleScr00ge | Bytes and Big Integers | 10 | |
| karellum | Great Snakes | 3 | |
| karellum | Finding Flags | 2 | |
| TeoKech | Factoring | 15 | |
| based10 | Lemur XOR | 40 | |
| UncleScr00ge | Base64 | 10 | |
| UncleScr00ge | Hex | 5 | |
| shineyjanuary | JSON in JSON | 40 | |
| nouryxI | Base64 | 10 | |
| LamaAboSh | Bringing It All Together | 50 | |
| 0xmhmdnsar | XOR Starter | 10 | |
| UncleScr00ge | ASCII | 5 | |
| eirene | RSA Signatures | 25 | |
| LamaAboSh | Diffusion through Permutation | 30 | |
| UncleScr00ge | Network Attacks | 5 | |
| helent | Modular Arithmetic 2 | 20 | |
| UncleScr00ge | Great Snakes | 3 | |
| LamaAboSh | Confusion through Substitution | 25 | |
| UncleScr00ge | Finding Flags | 2 |
You are now level Current level