What are the most common types of computer viruses and how do you protect against them?

Computer viruses are malicious software programs designed to damage, steal or destroy data on a computer. There are several types of viruses that can infect a computer, including:

• File infectors: These viruses infect executable files, which can cause damage to the operating system and spread to other files.
• Boot sector viruses: These viruses infect the boot sector of a computer, making it difficult to detect and remove.
• Macro viruses: These viruses infect documents and spreadsheets, which can cause the virus to spread to other computers when the document is shared.
• Trojan horses: These viruses disguise themselves as legitimate software, but can cause damage to a computer once they are installed.
• Worms: These viruses spread from computer to computer over the internet, causing damage to networks and systems.

To protect against viruses, it is important to use antivirus software that is regularly updated to detect and remove the latest threats. Other ways to protect against viruses include keeping software up to date, being cautious when opening email attachments, and avoiding suspicious websites.