The computer virus normally attaches itself to another computer programme known as :-

The correct answer is host programme

Key Points

• A host program is any executable file or document that a virus or other form of malware attaches itself to in order to execute its malicious payload.
• When the host program is run, the virus code is activated and can infect the system.
• This differs from other forms of malware like a backdoor program, which is designed to bypass normal authentication processes, or a Trojan horse, which is a malicious program disguising itself as a legitimate one.
• A target program, in this context, doesn't have a specific meaning but generally refers to any software that is a target of some operation, which could be infection, modification, debugging, reverse engineering, etc.