| Date | User | Challenge | Score |
| yowsevanz | XOR Starter | 10 | |
| SigmaMonster | Great Snakes | 3 | |
| SigmaMonster | Finding Flags | 2 | |
| SuikaPredator | Favourite byte | 20 | |
| SuikaPredator | XOR Properties | 15 | |
| Technoblade | Modular Arithmetic 1 | 20 | |
| duckyCrypt | XOR Starter | 10 | |
| selectride | Infinite Descent | 50 | |
| cpicozzi | The Good, The Pad, The Ugly | 100 | |
| hamon | Greatest Common Divisor | 15 | |
| SuikaPredator | XOR Starter | 10 | |
| SuikaPredator | Encoding Challenge | 40 | |
| SpongeBob369 | Export-grade | 100 | |
| foxkids33 | Legendre Symbol | 35 | |
| z4ibi | Broken RSA | 100 | |
| demr | Saying Hello | 20 | |
| SuikaPredator | Bytes and Big Integers | 10 | |
| cafecafe | SSH Keys | 35 | |
| zKami | Finding Flags | 2 | |
| SuikaPredator | Base64 | 10 | |
| amitttxe | Finding Flags | 2 | |
| SuikaPredator | Hex | 5 | |
| SuikaPredator | ASCII | 5 | |
| SuikaPredator | Network Attacks | 5 | |
| cafecafe | CERTainly not | 30 | |
| PPotat0 | Modular Arithmetic 1 | 20 | |
| PPotat0 | Extended GCD | 20 | |
| SpongeBob369 | Parameter Injection | 60 | |
| RlyehSeeker | Bytes and Big Integers | 10 | |
| z4ibi | Lemur XOR | 40 | |
| SuikaPredator | Great Snakes | 3 | |
| SuikaPredator | Finding Flags | 2 | |
| foxkids33 | Quadratic Residues | 25 | |
| PPotat0 | Greatest Common Divisor | 15 | |
| fle0IFk3a0f | Greatest Common Divisor | 15 | |
| raghav_45 | Round Keys | 20 | |
| RlyehSeeker | Base64 | 10 | |
| mrmando | Finding Flags | 2 | |
| agentjlrmt | Jack's Birthday Confusion | 30 | |
| agentjlrmt | Jack's Birthday Hash | 20 | |
| gigisoave | Round Keys | 20 | |
| z4ibi | Network Attacks | 5 | |
| Bane3562 | Greatest Common Divisor | 15 | |
| SpongeBob369 | Deriving Symmetric Keys | 40 | |
| kevin21 | Passwords as Keys | 50 | |
| DavidTruong | Hamiltonicity 2 | 175 | |
| DavidTruong | Hamiltonicity 2 (CryptoHack) | 0 | |
| phucpk | Real Eisenstein | 150 | |
| christian12341 | Finding Flags | 2 | |
| AboEl5yr | Base64 | 10 |
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