Computer hardware is the general term for the physical components that make up a computer system, including the case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers, and motherboard. Hardware is typically directed by software to execute any commands or instructions.

A computer virus is actually a type of computer program that alters the way a computer operates without the user’s permission or knowledge, and attempts to hide itself within other files.

Computer security is essentially the protection of computer systems and information against harm, theft, and unauthorized use. It involves the prevention and detection of unauthorized access to your computer system.

A computer service technician is a qualified individual who installs computer hardware, operates the computer, performs maintenance and repairs, establishes network connections, and ensures system security. Their tasks may include conducting regular computer maintenance and participating in professional development activities.

Website security is a critical component in protecting and ensuring the security of websites and servers. If the network is compromised, the server and website are also at risk, allowing for malware to infiltrate the corporate network and facilitate malicious activities.

Database security is concerned with the use of a variety of information security controls to protect the confidentiality, integrity, and accessibility of databases against attacks.