| Date | User | Challenge | Score |
| jopayoki | Base64 | 10 | |
| heckgold | Bytes and Big Integers | 10 | |
| TechnoFile711 | Quadratic Residues | 25 | |
| Georges_02 | XOR Properties | 15 | |
| pin | Noise Free | 40 | |
| sowon | Greatest Common Divisor | 15 | |
| jopayoki | Hex | 5 | |
| Halt_Man | Hex | 5 | |
| Halt_Man | ASCII | 5 | |
| OmerSecure | Base64 | 10 | |
| monica | Quadratic Residues | 25 | |
| Vogel04 | You either know, XOR you don't | 30 | |
| sowon | Lemur XOR | 40 | |
| jopayoki | ASCII | 5 | |
| monica | Modular Inverting | 25 | |
| Halt_Man | Great Snakes | 3 | |
| OmerSecure | Hex | 5 | |
| ltwind_v2 | Nothing Up My Sleeve | 150 | |
| jopayoki | Great Snakes | 3 | |
| monica | Modular Arithmetic 2 | 20 | |
| jopayoki | Finding Flags | 2 | |
| ra_mn | RSA Decryption | 20 | |
| Halt_Man | Finding Flags | 2 | |
| obahya | Background Reading | 5 | |
| monica | Modular Arithmetic 1 | 20 | |
| monica | Extended GCD | 20 | |
| moe0l | LFSR Destroyer | 250 | |
| monica | Greatest Common Divisor | 15 | |
| Datta | Extended GCD | 20 | |
| pin | Broken RSA | 100 | |
| Vogel04 | Favourite byte | 20 | |
| Ba1sars | ASCII | 5 | |
| lcalvie | Modular Binomials | 80 | |
| PAWOS | Oracular Spectacular | 150 | |
| MINO0939 | ASCII | 5 | |
| Vogel04 | XOR Properties | 15 | |
| MINO0939 | Great Snakes | 3 | |
| wa7di_ | Base64 | 10 | |
| MINO0939 | Finding Flags | 2 | |
| hasuke | ECB CBC WTF | 55 | |
| wa7di_ | Hex | 5 | |
| Jinx | Armory | 100 | |
| Raferior | ECB Oracle | 60 | |
| Jinx | Bit by Bit | 100 | |
| wa7di_ | ASCII | 5 | |
| WarSpore | Oh SNAP | 120 | |
| pin | Successive Powers | 60 | |
| Jinx | LFSR Destroyer | 250 | |
| TinyLean | Lazy CBC | 60 | |
| QRms | Favourite byte | 20 |
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