| Date | User | Challenge | Score |
| GHL | Parameter Injection | 60 | |
| kilpom | Favourite byte | 20 | |
| GHL | Deriving Symmetric Keys | 40 | |
| kilpom | XOR Properties | 15 | |
| kcard4 | Passwords as Keys | 50 | |
| quantum_cracking | Monoprime | 30 | |
| kcard4 | Modes of Operation Starter | 15 | |
| kcard4 | Bringing It All Together | 50 | |
| kilpom | XOR Starter | 10 | |
| kcard4 | Diffusion through Permutation | 30 | |
| aboj | You either know, XOR you don't | 30 | |
| quantum_cracking | Factoring | 15 | |
| k8lyn1298 | You either know, XOR you don't | 30 | |
| V1ckey | Flipping Cookie | 60 | |
| aboj | Favourite byte | 20 | |
| aboj | XOR Properties | 15 | |
| trashcan08 | Moving Problems | 150 | |
| Sparrow09 | Resisting Bruteforce | 10 | |
| quantum_cracking | RSA Signatures | 25 | |
| trashcan08 | ProSign 3 | 100 | |
| Denis_Roc | Flipping Cookie | 60 | |
| kcard4 | Confusion through Substitution | 25 | |
| quantum_cracking | RSA Decryption | 20 | |
| azan121468 | Bit by Bit | 100 | |
| quantum_cracking | Private Keys | 20 | |
| alyce | Resisting Bruteforce | 10 | |
| alyce | Keyed Permutations | 5 | |
| MindBrand25 | You either know, XOR you don't | 30 | |
| fa2jr | XOR Properties | 15 | |
| KAN1NZ0 | Base64 | 10 | |
| KAN1NZ0 | Hex | 5 | |
| KAN1NZ0 | ASCII | 5 | |
| KAN1NZ0 | Great Snakes | 3 | |
| KAN1NZ0 | Finding Flags | 2 | |
| Docredstein | Montgomery's Ladder | 40 | |
| Docredstein | Efficient Exchange | 50 | |
| MindBrand25 | Favourite byte | 20 | |
| Docredstein | Curves and Logs | 40 | |
| wahab | XOR Starter | 10 | |
| Docredstein | Scalar Multiplication | 35 | |
| kcard4 | Round Keys | 20 | |
| Docredstein | Point Addition | 30 | |
| V1ckey | ECB CBC WTF | 55 | |
| Docredstein | Point Negation | 10 | |
| Docredstein | Background Reading | 5 | |
| PatrickL_SC | Forbidden Fruit | 150 | |
| kalopsia | Bytes and Big Integers | 10 | |
| Sacharkaw7 | Base64 | 10 | |
| Sacharkaw7 | Hex | 5 | |
| Sacharkaw7 | ASCII | 5 |
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