 |
| |||
| polyalphabetic (Alex_Odeychuk) | |||
| многоалфавитный: 11 phrases in 4 subjects |
| Cryptography | 1 |
| Information security and data protection | 4 |
| Military | 1 |
| Security systems | 5 |
|
| |||
| polyalphabetic (Alex_Odeychuk) | |||
| многоалфавитный: 11 phrases in 4 subjects |
| Cryptography | 1 |
| Information security and data protection | 4 |
| Military | 1 |
| Security systems | 5 |