Antivirus software is designed to protect your computer from various types of malware, including viruses, Trojans, spyware, and ransomware. These malicious programs can harm your computer, steal sensitive data, and even lead to financial losses. Without antivirus software, your computer is vulnerable to attacks, which can result in data loss, system crashes, and compromised security. Antivirus software acts as a shield, detecting and removing malware, and preventing future infections.