| Date | User | Challenge | Score |
| melxz | Hex | 5 | |
| BottyBoy | Base64 | 10 | |
| muzacky | Favourite byte | 20 | |
| muzacky | XOR Properties | 15 | |
| muzacky | XOR Starter | 10 | |
| muzacky | Bytes and Big Integers | 10 | |
| muzacky | Base64 | 10 | |
| rykona | Bytes and Big Integers | 10 | |
| muzacky | Hex | 5 | |
| febayunny | Factoring | 15 | |
| muzacky | ASCII | 5 | |
| BottyBoy | Hex | 5 | |
| muzacky | Great Snakes | 3 | |
| rykona | Base64 | 10 | |
| muzacky | Finding Flags | 2 | |
| rykona | Hex | 5 | |
| 0xRaha | Lemur XOR | 40 | |
| melxz | ASCII | 5 | |
| zynox | Extended GCD | 20 | |
| yoavb | Network Attacks | 5 | |
| Blixow | Smooth Criminal | 60 | |
| BottyBoy | ASCII | 5 | |
| dzgnhjmfxh | Bytes and Big Integers | 10 | |
| BottyBoy | Great Snakes | 3 | |
| BottyBoy | Finding Flags | 2 | |
| rykona | ASCII | 5 | |
| rykona | Great Snakes | 3 | |
| melxz | Great Snakes | 3 | |
| febayunny | RSA Signatures | 25 | |
| erenlander | Modular Inverting | 25 | |
| rykona | Finding Flags | 2 | |
| RizkiSeptiadi | You either know, XOR you don't | 30 | |
| febayunny | RSA Decryption | 20 | |
| RizkiSeptiadi | Favourite byte | 20 | |
| RizkiSeptiadi | XOR Properties | 15 | |
| febayunny | Private Keys | 20 | |
| RizkiSeptiadi | XOR Starter | 10 | |
| febayunny | Euler's Totient | 20 | |
| RizkiSeptiadi | Bytes and Big Integers | 10 | |
| febayunny | Public Keys | 15 | |
| RizkiSeptiadi | Base64 | 10 | |
| febayunny | Modular Exponentiation | 10 | |
| phantasm | You either know, XOR you don't | 30 | |
| RizkiSeptiadi | Hex | 5 | |
| RizkiSeptiadi | ASCII | 5 | |
| RizkiSeptiadi | Great Snakes | 3 | |
| akfgxalhhgcvwhuv | Finding Flags | 2 | |
| melxz | Finding Flags | 2 | |
| grigorii | You either know, XOR you don't | 30 | |
| dexter_nate27 | Let's Decrypt | 80 |
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