Does a computer virus affect the BIOS?

How?

A computer virus is a type of malicious software that can infect a computer’s files, programs, and even the operating system. However, a computer virus does not directly affect the BIOS (Basic Input/Output System) of a computer. The BIOS is a firmware that is responsible for booting the computer and initializing essential hardware components. It is stored on a chip on the computer’s motherboard and is separate from the hard drive where viruses usually reside.

Computer viruses typically target executable files or documents, and they rely on the operating system to execute their code. The BIOS, being a low-level software, is not directly accessible by viruses. Therefore, a virus cannot directly modify or infect the BIOS.

Why?

The separation of the BIOS from the storage devices is a security measure designed to protect the firmware from being modified or compromised by malicious software. By isolating the BIOS, it ensures that even if a virus infects the operating system or the hard drive, it cannot directly target or alter the BIOS.

Keeping the BIOS secure is crucial because compromising it could have severe consequences, such as rendering the computer inoperable or allowing unauthorized access to the system. Manufacturers implement security features, such as write protection, to prevent unauthorized modifications to the BIOS.

When?

The information provided in this article is current and as of the year 2023.

Where?

The separation of the BIOS from the storage devices to prevent virus infections is a standard practice in computer architecture and is applicable to all modern computer systems.

Who?

The responsibility for protecting the BIOS from virus infections lies with the computer manufacturers and developers who design the hardware and firmware. Additionally, individual users play a role by adopting good security practices, such as regularly updating their antivirus software and avoiding suspicious downloads or websites that may contain infected files.