File infectors infect executable files, usually Windows portable executables. They infect by incorporating their malicious code into executable files such that when the infected file is opened, the malicious code is also executed.

File infectors may come with other capabilities. Many viruses open backdoor access ports that allow remote users to manipulate affected systems, while some can spread into other computers.

Infected files are typically cleanable - they can be reverted back to their clean states. However, restoring affected systems may require procedures other than scanning with an antivirus program.



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