Viruses, worms and trojan horses are all?

Viruses, worms, and trojan horses are all examples of malicious software, also known as malware. Malware is software that is designed to harm or exploit a computer system. A virus is a type of malware that infects a computer file and then spreads to other files on the same computer or to other computers on the same network. A worm is similar to a virus in that it can spread from computer to computer, but it does not need to attach itself to a specific file. Instead, it can create its own network connections to spread. A trojan horse is a type of malware that is disguised as a legitimate software program. When the program is installed, the trojan horse is activated and can then steal sensitive information or cause other harm to the computer system. In summary, viruses, worms, and trojan horses are all malicious software that can harm computer systems, and it is important to protect your computer from these types of threats by using anti-virus software and being cautious when downloading and installing programs.