A malicious program. It can illegally and clandestinely embed its copies into other programs.
A malicious program type. It spreads by itself using various computer resources: email, Web sites, IRC channels, local networks, etc.
A malicious program. When started, it performs destructive or undesired actions on the computer.
This virus type modifies its appearance by using encryption methods. Consequently, these viruses contain no constant code blocks at all, which makes it harder for an antivirus program to recognize and remove them.
This virus presents a veneer of temporary recovery to conceal its presence in a system. For example, these viruses temporarily restore the ...