Scanners – launched at the user’s request. Provides search and detection of viruses.
Auditors – creates a database with checksums and other information, allowing you to notice the change in any file.
Monitors (watchmen) are a resident program. Provides constant protection.
Immunizers (vaccines) – protects the system from being damaged by viruses of known types.
Polyphages (doctors) – finds files infected with viruses and “cures” them ie removes the body of the virus program from the file.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.