| Date | User | Challenge | Score |
| hmd0102 | Secure Protocols | 5 | |
| hmd0102 | JSON in JSON | 40 | |
| Khans | XOR Starter | 10 | |
| Renzoo | You either know, XOR you don't | 30 | |
| jwc1686 | Favourite byte | 20 | |
| Renzoo | Favourite byte | 20 | |
| meldstorm | Honest Verifier Zero Knowledge | 30 | |
| onion7120 | You either know, XOR you don't | 30 | |
| Renzoo | XOR Properties | 15 | |
| Rubis | Bytes and Big Integers | 10 | |
| capnolove | Modular Arithmetic 1 | 20 | |
| moystee | Modular Inverting | 25 | |
| Khans | Bytes and Big Integers | 10 | |
| Staroll | Legendre Symbol | 35 | |
| radare | Toshi's Treasure | 150 | |
| moystee | Modular Arithmetic 2 | 20 | |
| Khans | Base64 | 10 | |
| w4llnut | Favourite byte | 20 | |
| rplinko | Lazy CBC | 60 | |
| Renzoo | XOR Starter | 10 | |
| azkiz | You either know, XOR you don't | 30 | |
| Khans | Hex | 5 | |
| moystee | Modular Arithmetic 1 | 20 | |
| moystee | Extended GCD | 20 | |
| miiyen | Keyed Permutations | 5 | |
| Khans | ASCII | 5 | |
| luispalumbo | Finding Flags | 2 | |
| w4llnut | XOR Properties | 15 | |
| Khans | Great Snakes | 3 | |
| Khans | Finding Flags | 2 | |
| fazrinuriman | Adrien's Signs | 80 | |
| moystee | Greatest Common Divisor | 15 | |
| fazrinuriman | Chinese Remainder Theorem | 40 | |
| fazrinuriman | Modular Square Root | 35 | |
| see0 | You either know, XOR you don't | 30 | |
| jwc1686 | XOR Properties | 15 | |
| PAWOS | RSA Backdoor Viability | 175 | |
| see0 | Favourite byte | 20 | |
| maresiaskye | Finding Flags | 2 | |
| fazrinuriman | Legendre Symbol | 35 | |
| w4llnut | XOR Starter | 10 | |
| see0 | XOR Properties | 15 | |
| w4llnut | Bytes and Big Integers | 10 | |
| see0 | XOR Starter | 10 | |
| w4llnut | Base64 | 10 | |
| afrizats | Greatest Common Divisor | 15 | |
| ty4115 | Modes of Operation Starter | 15 | |
| w4llnut | Hex | 5 | |
| OgFishTea007 | Finding Flags | 2 | |
| CryptoBro | Greatest Common Divisor | 15 |
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