A laptops innumerable malicious programs that can infect your computer. Here are a few different types:
Virus: These are programs that replicate themselves between computers and attach themselves to existing programs. This is usually a catch-all term used for all malware.
Trojan Horse: This type of malware masquerades as a harmless program but opens your computer up to other malware programs and can be used as a “back door” for accessing a computer remotely.
Worm:These are self-contained programs and replicate themselves on computers. They are also known for consuming large amounts of bandwidth on networks.
Rootkit: This is a program that takes administrative control of a computers operating system and denies access to users. These can be the hardest to remove since they are usually loaded before the Operating System even starts.
Adware: These are programs that infect a computer with the sole purpose of displaying advertisements to users.
Spyware: This is used to collect personal and passwords from users and can be used in identity theft.
Scareware: These type of program scares the user into thinking they are virus infected or have a failing hard drive. Then then try to trick the user into paying them money to remove the non-existent virus.