| Date | User | Challenge | Score |
| Pijushm | ASCII | 5 | |
| commandos | Oracular Spectacular | 150 | |
| IOSA | Round Keys | 20 | |
| desiar76 | Bringing It All Together | 50 | |
| RotaJakiro | Factoring | 15 | |
| Pijushm | Great Snakes | 3 | |
| Honoured_One | You either know, XOR you don't | 30 | |
| IOSA | Structure of AES | 15 | |
| spy003 | Logon Zero | 80 | |
| Pijushm | Finding Flags | 2 | |
| T0x1c | Collider | 50 | |
| MrPuPa | Favourite byte | 20 | |
| IOSA | Resisting Bruteforce | 10 | |
| Duster | Parameter Injection | 60 | |
| IOSA | Keyed Permutations | 5 | |
| desiar76 | Diffusion through Permutation | 30 | |
| Honoured_One | Favourite byte | 20 | |
| T0x1c | Jack's Birthday Confusion | 30 | |
| RotaJakiro | RSA Signatures | 25 | |
| MrPuPa | XOR Properties | 15 | |
| Federico74 | Bytes and Big Integers | 10 | |
| T0x1c | Jack's Birthday Hash | 20 | |
| Spire | Irish flan (ECSC 2023 (Norway)) | 0 | |
| Duster | Deriving Symmetric Keys | 40 | |
| Federico74 | Base64 | 10 | |
| thar_n_adhithya | Greatest Common Divisor | 15 | |
| YouDecide | Adrien's Signs | 80 | |
| hodinhtri30 | Favourite byte | 20 | |
| commandos | Authenticated Handshake | 40 | |
| Duster | Computing Shared Secrets | 30 | |
| blacknox | Bytes and Big Integers | 10 | |
| Spire | Authentification 1 (Breizh CTF) | 0 | |
| commandos | LFSR Destroyer | 250 | |
| killua4564 | Bounded Noise | 50 | |
| UrSourceCode | Favourite byte | 20 | |
| Duster | Computing Public Values | 25 | |
| YouDecide | Modular Square Root | 35 | |
| Subihenuer | Chinese Remainder Theorem | 40 | |
| Sanxpher | Finding Flags | 2 | |
| defa | Proofs of Knowledge | 20 | |
| Honoured_One | XOR Properties | 15 | |
| hodinhtri30 | XOR Properties | 15 | |
| MrPuPa | XOR Starter | 10 | |
| commandos | Ticket Maestro | 200 | |
| gkaanls | Backpack Cryptography | 120 | |
| commandos | Ticket Maestro (CryptoHack) | 0 | |
| seqo | Greatest Common Divisor | 15 | |
| hodinhtri30 | XOR Starter | 10 | |
| GeoJan | You either know, XOR you don't | 30 | |
| Honoured_One | XOR Starter | 10 |
You are now level Current level