The Internet Security 2011 Software from Kaspersky is a Windows software application that protects your computer against viruses, malware, spyware, trojans, bots, rootkits, and other malicious software. It features a built-in firewall that protects your computer from other attacks originating from the Internet, and parental controls allow you to prevent your children from viewing dangerous or inappropriately risqué websites. A spam filter helps to block junk e-mail from your entering your inbox.