| Date | User | Challenge | Score |
| Samuel__ | Encoding Challenge | 40 | |
| maimonah | Jack's Birthday Confusion | 30 | |
| abyssusnox | Bytes and Big Integers | 10 | |
| maimonah | Jack's Birthday Hash | 20 | |
| BLCKmeidei | Hex | 5 | |
| 25164137 | Public Keys | 15 | |
| 25164137 | Modular Exponentiation | 10 | |
| abyssusnox | Base64 | 10 | |
| WilmerTorres | Base64 | 10 | |
| KeenanJoshua | Modular Arithmetic 2 | 20 | |
| WilmerTorres | Bytes and Big Integers | 10 | |
| maimonah | Marin's Secrets | 50 | |
| maimonah | Ron was Wrong, Whit is Right | 90 | |
| WilmerTorres | Hex | 5 | |
| zkev123 | Bytes and Big Integers | 10 | |
| Markax | Bytes and Big Integers | 10 | |
| maimonah | Blinding Light | 120 | |
| nyls_andr | Bytes and Big Integers | 10 | |
| WilmerTorres | ASCII | 5 | |
| zkev123 | Base64 | 10 | |
| maimonah | Vote for Pedro | 150 | |
| maimonah | Null or Never | 100 | |
| KeenanJoshua | Modular Arithmetic 1 | 20 | |
| maimonah | Bespoke Padding | 100 | |
| narek | You either know, XOR you don't | 30 | |
| maimonah | Signing Server | 60 | |
| abyssusnox | Hex | 5 | |
| AbdulmlikAlsalat | Twin Keys | 100 | |
| Jeffry | Bytes and Big Integers | 10 | |
| st33cy | Bytes and Big Integers | 10 | |
| FelipeB | Bytes and Big Integers | 10 | |
| Jeffry | Base64 | 10 | |
| Jeffry | Hex | 5 | |
| nathalypenalba | Encoding Challenge | 40 | |
| nyls_andr | Base64 | 10 | |
| JPatterson | Encoding Challenge | 40 | |
| itmar | Modular Inverting | 25 | |
| itmar | Modular Arithmetic 2 | 20 | |
| itmar | Modular Arithmetic 1 | 20 | |
| itmar | Extended GCD | 20 | |
| Markax | Base64 | 10 | |
| annakcrypto | Network Attacks | 5 | |
| itmar | Greatest Common Divisor | 15 | |
| slycro | Passwords as Keys | 50 | |
| juvenciomartinez | Bytes and Big Integers | 10 | |
| itmar | Lemur XOR | 40 | |
| JPatterson | Bytes and Big Integers | 10 | |
| Art3mis | Adrien's Signs | 80 | |
| itmar | You either know, XOR you don't | 30 | |
| zkev123 | Hex | 5 |
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