| Date | User | Challenge | Score |
| ji4xuu | Decrypting TLS 1.2 | 30 | |
| HarryT1211 | Great Snakes | 3 | |
| revivd | Extended GCD | 20 | |
| Croatia | Extended GCD | 20 | |
| HarryT1211 | Finding Flags | 2 | |
| Croatia | Greatest Common Divisor | 15 | |
| ji4xuu | Saying Hello | 20 | |
| sopobot | Lazy CBC | 60 | |
| bayram | ASCII | 5 | |
| sopobot | Triple DES | 60 | |
| revivd | Greatest Common Divisor | 15 | |
| Juha | Legendre Symbol | 35 | |
| bayram | Network Attacks | 5 | |
| syadidd | RSA Backdoor Viability | 175 | |
| Croatia | You either know, XOR you don't | 30 | |
| syadidd | Ron was Wrong, Whit is Right | 90 | |
| 0xfuz | Encoding Challenge | 40 | |
| revivd | You either know, XOR you don't | 30 | |
| Predaking753 | Great Snakes | 3 | |
| 0xfuz | Network Attacks | 5 | |
| JohnDuck | Great Snakes | 3 | |
| hyperr | Quadratic Residues | 25 | |
| Ozix | Base64 | 10 | |
| cryptobro5757 | ASCII | 5 | |
| xiao1 | Lemur XOR | 40 | |
| revivd | Favourite byte | 20 | |
| 0xfuz | XOR Starter | 10 | |
| cryptobro5757 | Great Snakes | 3 | |
| bayram | Great Snakes | 3 | |
| 0xfuz | Bytes and Big Integers | 10 | |
| JohnDuck | Finding Flags | 2 | |
| cryptobro5757 | Finding Flags | 2 | |
| Ozix | Hex | 5 | |
| revivd | XOR Properties | 15 | |
| Ozix | ASCII | 5 | |
| Assombroso | Decrypting TLS 1.3 | 35 | |
| 0xfuz | Base64 | 10 | |
| 0xfuz | Hex | 5 | |
| 0xfuz | ASCII | 5 | |
| 0xfuz | Great Snakes | 3 | |
| Assombroso | Decrypting TLS 1.2 | 30 | |
| 0xfuz | Finding Flags | 2 | |
| bayram | Finding Flags | 2 | |
| DaGam3rGod | Finding Flags | 2 | |
| Ozix | Great Snakes | 3 | |
| Croatia | Favourite byte | 20 | |
| Ozix | Finding Flags | 2 | |
| Croatia | XOR Properties | 15 | |
| xiao1 | You either know, XOR you don't | 30 | |
| Assombroso | Saying Hello | 20 |
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