Security software helps protect your computer and personal information from threats like viruses, hackers, and malware. It acts like a shield, preventing harmful programs from damaging your system or stealing your data. This software includes tools like antivirus programs, firewalls, and anti-spyware, which scan for and block malicious activity. It also often provides features like secure browsing and password management to keep your online activities safe. By regularly updating and running security software, you can help ensure that your devices stay safe and your personal information remains private.