| Date | User | Challenge | Score |
| viktordcrt | Favourite byte | 20 | |
| vizz | Modular Binomials | 80 | |
| viktordcrt | XOR Properties | 15 | |
| vizz | Successive Powers | 60 | |
| tup01ris | Network Attacks | 5 | |
| GrimX | Hex | 5 | |
| BigMoose1984 | Finding Flags | 2 | |
| Sole | Public Keys | 15 | |
| 0xs1nr | What's a Lattice? | 40 | |
| GrimX | ASCII | 5 | |
| m3rl1n | Great Snakes | 3 | |
| m3rl1n | Finding Flags | 2 | |
| CoolMan176 | Bytes and Big Integers | 10 | |
| Sole | Modular Exponentiation | 10 | |
| tup01ris | Great Snakes | 3 | |
| GrimX | Great Snakes | 3 | |
| GrimX | Finding Flags | 2 | |
| LeeKangHy | Signing Server | 60 | |
| 0xs1nr | Gram Schmidt | 30 | |
| islmcrypt | Bytes and Big Integers | 10 | |
| LeeKangHy | Let's Decrypt | 80 | |
| kangenha | Bean Counter | 60 | |
| LeeKangHy | Blinding Light | 120 | |
| tup01ris | Finding Flags | 2 | |
| swViking | Prime and Prejudice | 200 | |
| nurminen | Twin Keys | 100 | |
| ryvii | XOR Starter | 10 | |
| kangenha | Symmetry | 50 | |
| mostafawefky | Favourite byte | 20 | |
| Jacopo_Pio | Modular Inverting | 25 | |
| Asterix22 | Legendre Symbol | 35 | |
| TechnoVolt | XOR Starter | 10 | |
| ahanporwal | Hex | 5 | |
| liyi | XOR Starter | 10 | |
| kangenha | Flipping Cookie | 60 | |
| AhmedA1 | You either know, XOR you don't | 30 | |
| ahanporwal | ASCII | 5 | |
| gejin1017462464 | Diffusion through Permutation | 30 | |
| That11thHarmonic | Ellipse Curve Cryptography | 125 | |
| desa_05 | Passwords as Keys | 50 | |
| a0wsec | Hex | 5 | |
| ryvii | Bytes and Big Integers | 10 | |
| mavil27 | Megalomaniac 2 | 120 | |
| fjukh7872 | ECB CBC WTF | 55 | |
| Jacopo_Pio | Modular Arithmetic 2 | 20 | |
| ahanporwal | Great Snakes | 3 | |
| jhh0406 | Oracular Spectacular | 150 | |
| mavil27 | Megalomaniac 1 | 100 | |
| Lamb2202 | Passwords as Keys | 50 | |
| a0wsec | ASCII | 5 |
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