| Date | User | Challenge | Score |
| irwan | Hex | 5 | |
| shri69 | Greatest Common Divisor | 15 | |
| zekehg | Base64 | 10 | |
| Hygene | You either know, XOR you don't | 30 | |
| chadi9230 | Base64 | 10 | |
| tango89 | Modular Exponentiation | 10 | |
| zekehg | Hex | 5 | |
| Cyberseal | Modular Inverting | 25 | |
| vicferx | Base64 | 10 | |
| User0069 | Roll your Own | 125 | |
| chadi9230 | Hex | 5 | |
| lavi24 | XOR Properties | 15 | |
| chadi9230 | ASCII | 5 | |
| Anass67 | Computing Public Values | 25 | |
| zekehg | ASCII | 5 | |
| zekehg | Great Snakes | 3 | |
| irwan | ASCII | 5 | |
| chadi9230 | Network Attacks | 5 | |
| zekehg | Finding Flags | 2 | |
| Azavia | ASCII | 5 | |
| NicoNieners | ECB Oracle | 60 | |
| lavi24 | Favourite byte | 20 | |
| bolonge | Finding Flags | 2 | |
| vicferx | Hex | 5 | |
| Cyberseal | Modular Arithmetic 2 | 20 | |
| Azavia | Great Snakes | 3 | |
| fixcin | XOR Starter | 10 | |
| Arsyf | You either know, XOR you don't | 30 | |
| lavi24 | You either know, XOR you don't | 30 | |
| chadi9230 | Finding Flags | 2 | |
| chadi9230 | Great Snakes | 3 | |
| salmon | XOR Properties | 15 | |
| tigerBoss101 | Stream of Consciousness | 80 | |
| lavi24 | Lemur XOR | 40 | |
| credev | Bytes and Big Integers | 10 | |
| vysera | Network Attacks | 5 | |
| bakil | RSA Signatures | 25 | |
| Anass67 | Generators of Groups | 20 | |
| Hygene | Favourite byte | 20 | |
| ObsidianTrace | Extended GCD | 20 | |
| Azavia | Finding Flags | 2 | |
| credev | Base64 | 10 | |
| Zira | Parameter Injection | 60 | |
| vysera | Great Snakes | 3 | |
| QRms | Montgomery's Ladder | 40 | |
| vicferx | ASCII | 5 | |
| mohmadr | Base64 | 10 | |
| Anass67 | Working with Fields | 10 | |
| vysera | Finding Flags | 2 | |
| Hygene | XOR Properties | 15 |
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