| Date | User | Challenge | Score |
| Angelo | Curveball | 100 | |
| annmaz | Pad Thai | 80 | |
| wendy4747 | Flipping Cookie | 60 | |
| bowie41 | Symmetry | 50 | |
| Algorhythmn | Square Eyes | 35 | |
| Algorhythmn | Inferius Prime | 30 | |
| bowie41 | Modes of Operation Starter | 15 | |
| Hazel | Bringing It All Together | 50 | |
| bowie41 | Passwords as Keys | 50 | |
| Hazel | Diffusion through Permutation | 30 | |
| Anna_skarlatou | Lemur XOR | 40 | |
| B00177179 | Broken RSA | 100 | |
| Hazel | Confusion through Substitution | 25 | |
| teetoamate | Infinite Descent | 50 | |
| Hazel | Round Keys | 20 | |
| Hazel | Structure of AES | 15 | |
| Clyde | Finding Flags | 2 | |
| ispo | Fast Primes | 75 | |
| Hazel | Resisting Bruteforce | 10 | |
| Hazel | Keyed Permutations | 5 | |
| Keerthan_V | Computing Public Values | 25 | |
| Taspi | Finding Flags | 2 | |
| shokhba | Base64 | 10 | |
| Anna_skarlatou | LWE Intro | 10 | |
| Anna_skarlatou | LWE Background | 5 | |
| eiriknyb | Oh SNAP | 120 | |
| minhweaa | Structure of AES | 15 | |
| cyborgsmetalhalf | RSA Signatures | 25 | |
| B00177179 | Modular Square Root | 35 | |
| annmaz | The Good, The Pad, The Ugly | 100 | |
| mtsaki_97 | Hex | 5 | |
| Anna_skarlatou | ZKP Introduction | 5 | |
| aleksandra471 | The Matrix | 75 | |
| mtsaki_97 | ASCII | 5 | |
| Anna_skarlatou | Secure Protocols | 5 | |
| Mathinfernal | Resisting Bruteforce | 10 | |
| mtsaki_97 | Great Snakes | 3 | |
| Farkladin | Network Attacks | 5 | |
| B00177179 | Jack's Birthday Hash | 20 | |
| OaksAd | The Matrix | 75 | |
| felicious | Bytes and Big Integers | 10 | |
| Anna_skarlatou | Confusion through Substitution | 25 | |
| siancec | Public Keys | 15 | |
| hercules_mar | XOR Starter | 10 | |
| somesoo | Let's Decrypt | 80 | |
| nurminen | The Matrix Revolutions | 125 | |
| siancec | Modular Exponentiation | 10 | |
| zeroday651 | RSA Signatures | 25 | |
| felicious | Base64 | 10 | |
| felicious | Hex | 5 |
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