| Date | User | Challenge | Score |
| Hajar_Halim68 | Great Snakes | 3 | |
| Mohamedlazaar | ASCII | 5 | |
| marcofireball84 | Bean Counter | 60 | |
| 0Xzures | XOR Starter | 10 | |
| amyw | ASCII | 5 | |
| TooLazy | Structure of AES | 15 | |
| CryptoBro | Factoring | 15 | |
| rigalis | Bytes and Big Integers | 10 | |
| 0Xzures | Bytes and Big Integers | 10 | |
| amyw | Great Snakes | 3 | |
| amyw | Finding Flags | 2 | |
| rigalis | Base64 | 10 | |
| 0xs1nr | Gaussian Reduction | 50 | |
| turbovolt06 | Hex | 5 | |
| rigalis | Hex | 5 | |
| 0Xzures | Base64 | 10 | |
| CryptoBro | RSA Signatures | 25 | |
| Mohamedlazaar | Network Attacks | 5 | |
| JFM | You either know, XOR you don't | 30 | |
| pyr0 | Merkle Trees | 25 | |
| rigalis | ASCII | 5 | |
| TooLazy | Resisting Bruteforce | 10 | |
| rigalis | Great Snakes | 3 | |
| MiguelEsqueda | Encoding Challenge | 40 | |
| rigalis | Finding Flags | 2 | |
| Mohamedlazaar | Great Snakes | 3 | |
| Mohamedlazaar | Finding Flags | 2 | |
| TooLazy | Keyed Permutations | 5 | |
| Mariam57 | Resisting Bruteforce | 10 | |
| UnrealMonkey | Resisting Bruteforce | 10 | |
| UnrealMonkey | Keyed Permutations | 5 | |
| Zvezdan | Modular Square Root | 35 | |
| turbovolt06 | ASCII | 5 | |
| Zvezdan | Legendre Symbol | 35 | |
| Zvezdan | Quadratic Residues | 25 | |
| toad | Jack's Birthday Hash | 20 | |
| CryptoBro | RSA Decryption | 20 | |
| Zvezdan | Modular Inverting | 25 | |
| Zvezdan | Modular Arithmetic 2 | 20 | |
| Mariam57 | Keyed Permutations | 5 | |
| Zvezdan | Modular Arithmetic 1 | 20 | |
| CryptoBro | Private Keys | 20 | |
| Hajar_Halim68 | Finding Flags | 2 | |
| Zvezdan | Extended GCD | 20 | |
| Zvezdan | Greatest Common Divisor | 15 | |
| UnrealMonkey | Private Keys | 20 | |
| MiguelEsqueda | Bytes and Big Integers | 10 | |
| Zvezdan | You either know, XOR you don't | 30 | |
| Zvezdan | Favourite byte | 20 | |
| Zvezdan | XOR Properties | 15 |
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