 |
| encryption key: 99 phrases in 14 subjects |
| Computer networks | 2 |
| Computers | 1 |
| Cryptography | 4 |
| Electronics | 12 |
| General | 1 |
| Information security and data protection | 17 |
| Information technology | 2 |
| Makarov | 1 |
| Mass media | 3 |
| Microsoft | 4 |
| Programming | 7 |
| Security systems | 30 |
| Technology | 6 |
| Telecommunications | 9 |