| Date | User | Challenge | Score |
| Walt_RoX | Great Snakes | 3 | |
| Socrates | XOR Properties | 15 | |
| Walt_RoX | Finding Flags | 2 | |
| Oswald | JSON in JSON | 40 | |
| Socrates | XOR Starter | 10 | |
| nossblade | Diffusion through Permutation | 30 | |
| Piotr271 | TLS Handshake | 15 | |
| Oswald | RSA or HMAC? | 35 | |
| hasuke | XOR Starter | 10 | |
| zori | You either know, XOR you don't | 30 | |
| jaeming | Modular Arithmetic 1 | 20 | |
| bjwtaylor | Working with Fields | 10 | |
| puneet_73 | Base64 | 10 | |
| FotisL | Sharks on the Wire | 10 | |
| Oswald | JWT Secrets | 25 | |
| AYM | Diffusion through Permutation | 30 | |
| puneet_73 | Hex | 5 | |
| puneet_73 | ASCII | 5 | |
| Oswald | No Way JOSE | 20 | |
| puneet_73 | Great Snakes | 3 | |
| puneet_73 | Finding Flags | 2 | |
| aviviv | ECB CBC WTF | 55 | |
| nossblade | Confusion through Substitution | 25 | |
| zori | Favourite byte | 20 | |
| hasuke | Bytes and Big Integers | 10 | |
| Oswald | JWT Sessions | 10 | |
| nossblade | Round Keys | 20 | |
| berserkerboy | Greatest Common Divisor | 15 | |
| FotiosM11 | Computing Public Values | 25 | |
| nossblade | Structure of AES | 15 | |
| Piotr271 | Sharks on the Wire | 10 | |
| ASN_123 | Bringing It All Together | 50 | |
| Oswald | Token Appreciation | 5 | |
| Despoina | Modular Arithmetic 1 | 20 | |
| oGAD_ | Modes of Operation Starter | 15 | |
| patryk | Authenticated Handshake | 40 | |
| hasuke | Base64 | 10 | |
| AlkisTheCipher | RSA Signatures | 25 | |
| Despoina | Extended GCD | 20 | |
| zori | XOR Properties | 15 | |
| Avanish | XOR Properties | 15 | |
| muto98 | Legendre Symbol | 35 | |
| hasuke | Hex | 5 | |
| Ar3A_0 | Resisting Bruteforce | 10 | |
| c0r3dump3d | You either know, XOR you don't | 30 | |
| hasuke | ASCII | 5 | |
| jaeming | Extended GCD | 20 | |
| hasuke | Great Snakes | 3 | |
| hasuke | Finding Flags | 2 | |
| mary12555488 | Adrien's Signs | 80 |
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