No matter how carefully you browse through the internet, tiny viruses and malware make their way to scroll through your PCs and Laptops. McAfee antivirus a security software acts as a line of defense from such threats. Trojan horses, ransomware, macro viruses, and multipartite viruses are some of the unwanted invaders that make your computer ‘unwell’ and ‘crappy’. Such viruses and worms frequently perform malicious acts – duplicating files, accessing personal data, deleting files, slow down system resources, log keystrokes or perform unauthorized action such as attacking other computers.