Kaspersky Internet Security is an antivirus and internet security software that protects PCs, Macs, and mobile devices from malware, phishing, spam, and hacking attempts. Core components include File Anti-Virus, a two-way Firewall, Network Attack Blocker, System Watcher for ransomware rollback, and Safe Money for secured banking. Additional tools cover Secure Keyboard Input, on-screen keyboard, parental controls for safer kids' browsing, anti-phishing, and anti-spam filters, all managed from a single protection console.