Question and Answer about virus infection files

Q: If the computer is infected with viruses or the downloaded software contains viruses, will it infect other files in the hard disk, such as compressed files or video files, or will it only infect system files?

If the downloaded file contains a virus, but it is not opened or unzipped by double-clicking, will the virus automatically run? Is it okay to directly Delete this file containing viruses?

A: How to infect and infect objects depends on what virus it is, some will infect all executable files, some will only replace specific files, and some will only find the trouble of system files, some search for files with specific keywords (in file names or in file content or in File Code) or in specific formats (such as video files that have been used to delete love action movies ).

Viruses are not necessarily infected with files, some are deleted, some are hidden, some are modifying the registry, some are modifying the home page, and others are not doing anything, so it depends on how the virus is written, what functions does the author assign to viruses.

How to run or activate a file containing viruses also depends on how the virus is written. Some require you to activate or run a specific file containing viruses each time you open and run the file, some users add their own startup when activating or running for the first time, or after replacing the normal file, they are activated when the normal file (whether the system or application software) is running. Generally, the latter is mostly infected with viruses, such as viruses that are automatically downloaded. If there is no virus on the computer, only one file containing the virus is downloaded. It is harmless before activation, but be careful with the virus script, such as hiding it in a webpage, when you browse a webpage, the virus script is already active. Other Trojans or viruses downloaded by the script can also be activated by the script, of course, it depends on how the code is written and what functions are available. It is also possible that the virus script on the webpage is only used to change the IE homepage.