| Date | User | Challenge | Score |
| spidey2609 | Finding Flags | 2 | |
| Eliott | Broken RSA | 100 | |
| Brave_potato9 | You either know, XOR you don't | 30 | |
| Prachi_Baghel | Unencryptable | 125 | |
| Zuzix | ASCII | 5 | |
| Vather | ASCII | 5 | |
| Pkv123 | The Matrix Revolutions | 125 | |
| adolowy | Privacy-Enhanced Mail? | 25 | |
| Vather | Great Snakes | 3 | |
| Brave_potato9 | Favourite byte | 20 | |
| ibaadali2109 | Network Attacks | 5 | |
| Vather | Finding Flags | 2 | |
| stellev | Transparency | 50 | |
| Prachi_Baghel | Ellipse Curve Cryptography | 125 | |
| kadev | Lemur XOR | 40 | |
| Pkv123 | The Matrix | 75 | |
| Brave_potato9 | XOR Properties | 15 | |
| Ishant | Round Keys | 20 | |
| i5ida5 | XOR Starter | 10 | |
| Pkv123 | Script Kiddie | 70 | |
| kadev | You either know, XOR you don't | 30 | |
| Pkv123 | Deriving Symmetric Keys | 40 | |
| kadev | Favourite byte | 20 | |
| Pkv123 | Computing Shared Secrets | 30 | |
| Pkv123 | Computing Public Values | 25 | |
| Pkv123 | Generators of Groups | 20 | |
| Pkv123 | Working with Fields | 10 | |
| maletos | Great Snakes | 3 | |
| Prachi_Baghel | Broken RSA | 100 | |
| Brave_potato9 | XOR Starter | 10 | |
| gianost | Resisting Bruteforce | 10 | |
| Pkv123 | Unencryptable | 125 | |
| SCHROBB | Point Negation | 10 | |
| maletos | Finding Flags | 2 | |
| Pkv123 | Roll your Own | 125 | |
| Pkv123 | Ellipse Curve Cryptography | 125 | |
| kadev | XOR Properties | 15 | |
| Ishant | Structure of AES | 15 | |
| Grzywa | Finding Flags | 2 | |
| mtane | XOR Properties | 15 | |
| Prachi_Baghel | Common Ground | 75 | |
| Pkv123 | The Good, The Pad, The Ugly | 100 | |
| forge | Real Eisenstein | 150 | |
| Zhacker | Favourite byte | 20 | |
| SeraphUmbra | Finding Flags | 2 | |
| Prachi_Baghel | Successive Powers | 60 | |
| Pianix | ASCII | 5 | |
| phantomguy | Favourite byte | 20 | |
| Prachi_Baghel | Chinese Remainder Theorem | 40 | |
| Prachi_Baghel | Modular Square Root | 35 |
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