Ensuring your computer protection

Kaspersky Internet Security provides comprehensive protection of your computer against known and unknown threats, network and intruder attacks, spam and other unwanted information.

Every type of threat is handled by an individual protection component (see the description of components further in this section). Components can be enabled or disabled independently of one another and configured accordingly.

In addition to constant protection provided by the security components, we recommend that you regularly scan your computer for viruses. This is necessary in order to rule out the possibility of spreading malicious programs that have not been discovered by security components, for example, because the security level was set to low or for other reasons.

To keep Kaspersky Internet Security up-to-date, you need to update the bases and software modules used by the application. The application is updated automatically by default. However, you can always update the bases and software modules manually, if necessary.

You can control the individual applications that are launched on your computer by using the application activity control. The way applications access personal data is subject to special control. These data include files, folders and registry keys, which contain the settings and important data of the most frequently used applications, as well as the user’s files (My Documents folder, cookies, information about the user’s activity). When the safety of any application raises doubts, they can be run in a safe environment.

Certain specific tasks that need to be performed occasionally can be performed with the help of additional tools and wizards, such as configuring Microsoft Internet Explorer or erasing the traces of user activity in the system.

Protection components

The following protection components provide protection for your computer in real time:

File Anti-Virus

File Anti-Virus prevents infection of the computer’s file system. The components starts at startup of the operating system, continuously remains in the computer’s RAM, and scans all files being opened, saved, or launched on your computer and all connected drives. Kaspersky Internet Security intercepts each attempt to access a file and scans the file for known viruses. The file can only be processed further if the file is not infected or is successfully treated by the application. If a file cannot be disinfected for any reason, it will be deleted. A copy of the file will be saved in the backup, or moved to the quarantine.

Mail Anti-Virus

Mail Anti-Virus scans incoming and outgoing email messages on your computer. The email is available to the addressee only if it does not contain dangerous objects.

Web Anti-Virus

Web Anti-Virus intercepts and blocks scripts on websites if they pose a threat. All HTTP traffic is also subject to a thorough monitoring. Additionally, the component blocks access to malicious websites.

IM Anti-Virus

IM Anti-Virus ensures the safe use of Internet pagers. The component protects information that comes to your computer via IM protocols. IM Anti-Virus ensures safe operation of various applications for instant messaging.

Proactive Defense

Proactive Defense allows detection of a new malicious program before it can perform its malicious activity. The component’s operation is based on monitoring and analyzing the behavior of all applications installed on your computer. Depending on the actions being performed, Kaspersky Internet Security makes a decision whether each application is potentially dangerous or not. So your computer is protected not only from known viruses, but from new ones as well that have not yet been discovered.


A component integrated in Web Anti-Virus, Anti-Spam and IM Anti-Virus, which checks web addresses to see if they are included in the list of phishing and suspicious web addresses.

Application Control

Application Control logs the actions performed by applications in the system, and manages the applications’ activities, based on which group the component assigns them to. A set of rules is defined for each group of applications. These rules manage applications’ access to various operating system resources.


The Firewall ensures security for your work in local networks and on the Internet. The component filters all network activities using two types of rules: rules for applications and packet rules.

Network Attack Blocker

The Network Attack Blocker loads during the operating system launch, and scans incoming network traffic for activities characteristic of network attacks. Once an attempt to attack the computer is detected, Kaspersky Internet Security blocks any network activity of the attacking computer towards your computer.


Anti-Spam integrates into the mail client installed on your computer, and monitors all incoming email messages for spam. All messages containing spam are marked with a special header. An option to configure Anti-Spam for spam processing (deleting automatically, moving to a special folder, etc.) is also provided. The component also analyzes email messages to detect phishing.

Network Monitor

The component designed to view information about network activity in real-time mode.


Anti-Banner blocks advertising information located on banners built into interfaces of various programs installed on your computer, or displayed online.

Parental Control

Parental Control functionality is designed to protect children and teenagers from threats associated with using the computer and Internet browsing.

Parental Control lets you set flexible restrictions on access to web resources and applications for different users depending on their age. It also lets you view statistical reports on controlled user activity.

There are three groups of objects protected by the application components:

  • Files, identity data, user names and passwords, information about banking cards, etc. These files are protected by File Anti-Virus, Application Control and Proactive Defense.
  • Applications installed on your computer and operating system objects. These files are protected by Mail Anti-Virus, Web Anti-Virus, IM Anti-Virus, Application Control, Network Attack Blocker, Anti-Spam and Proactive Defense.
  • Online activity: using e-payment systems, email protection against spam and viruses etc. These files are protected by Mail Anti-Virus, Web Anti-Virus, IM Anti-Virus, Firewall, Network Attack Blocker, Anti-Spam, Network Monitor, Anti-Banner, Parental Control and Anti-Phishing.

The grouping of components depending on the objects they protect is graphically illustrated in the Protection Center section in the main application window.

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Ensuring your computer protection