ZC9
Solves
| Challenge | Category | Value | Time |
| Beware of SHA1rk | Cryptography | 20 | |
| Simple RSA | Cryptography | 20 | |
| Year 1993 by Urban Müller | Cryptography | 300 | |
| Stegnography 2 | Steganography | 150 |
| Challenge | Category | Value | Time |
| Beware of SHA1rk | Cryptography | 20 | |
| Simple RSA | Cryptography | 20 | |
| Year 1993 by Urban Müller | Cryptography | 300 | |
| Stegnography 2 | Steganography | 150 |