| Date | User | Challenge | Score |
| guyu | Quadratic Residues | 25 | |
| bemartian | Lemur XOR | 40 | |
| Skeletong | Bytes and Big Integers | 10 | |
| halliana | Key Backup Service 1 (HKCERT CTF) | 0 | |
| mirul_0098 | Finding Flags | 2 | |
| srebrek | Sharks on the Wire | 10 | |
| Hardodziobik | Signing Server | 60 | |
| At0mxploit | Modular Inverting | 25 | |
| notRuckuZzzz | Finding Flags | 2 | |
| Klaudia | Static Client | 100 | |
| srebrek | Secure Protocols | 5 | |
| Hardodziobik | RSA Backdoor Viability | 175 | |
| ispo | Modulus Inutilis | 50 | |
| AllFine | XOR Starter | 10 | |
| Hardodziobik | Ron was Wrong, Whit is Right | 90 | |
| Hardodziobik | Marin's Secrets | 50 | |
| Hardodziobik | Infinite Descent | 50 | |
| At0mxploit | Modular Arithmetic 2 | 20 | |
| HungTinhDuc2005 | Base64 | 10 | |
| Kml | Great Snakes | 3 | |
| ispo | Salty | 20 | |
| bemartian | You either know, XOR you don't | 30 | |
| HungTinhDuc2005 | Hex | 5 | |
| HungTinhDuc2005 | ASCII | 5 | |
| Creafy | Unencryptable | 125 | |
| hellomynameisjad | Base64 | 10 | |
| latte2 | Base64 | 10 | |
| zen999 | Base64 | 10 | |
| Kml | Finding Flags | 2 | |
| mdybicz | Modulus Inutilis | 50 | |
| bladexyzx | Base64 | 10 | |
| bladexyzx | Hex | 5 | |
| HungTinhDuc2005 | Great Snakes | 3 | |
| bemartian | Favourite byte | 20 | |
| mdybicz | Salty | 20 | |
| HungTinhDuc2005 | Finding Flags | 2 | |
| AllFine | Bytes and Big Integers | 10 | |
| Creafy | Ellipse Curve Cryptography | 125 | |
| joe23joe | Efficient Exchange | 50 | |
| fusi | Bytes and Big Integers | 10 | |
| AllFine | Base64 | 10 | |
| keyxxxtop | XOR Properties | 15 | |
| Klaudia | Script Kiddie | 70 | |
| AllFine | Hex | 5 | |
| joe23joe | Curves and Logs | 40 | |
| CMaster | ASCII | 5 | |
| AllFine | ASCII | 5 | |
| VuiVe | Additive | 70 | |
| bemartian | XOR Properties | 15 | |
| AllFine | Great Snakes | 3 |
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