Kaspersky Internet Security 2012

 
 
 

How to change the Anti-Spam security level in Kaspersky Internet Security 2012?

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2012 Aug 15 ID: 6461
 
 
 
 
Kaspersky Internet Security 2012 includes the Anti-Spam components which filters incomming emails and sorts it according to configures settings.

How to change security level of Anti-Spam in Kaspersky Internet Security 2012

In order to change the selected Anti-Spam component security level: 
  1. Open the main application window
  2. On the upper right hand corner of the main application window, click Settings
  3. On the upper left hand part of the Settings window, select Protection Center
  4. On the left hand part of the Settings window, select Anti-Spam
  5. Set the necessary security level
  6. On the Settings window,  click on the OK button
  7. Close the main application window.

You can also customize the spam rate for the spam and potential spam factors (to configure the Anti-Spam settings manuall, click on the Settings button). In this case the fourth security level  - Custom - different from the pre-set security levels recommended by Kaspersky Lab specialists will be added.

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Emails rating groups

To filter messages, the Anti-Spam component uses two rating groups:
  • Exact methods include databases containing info about e-mail addresses, web addresses, blocked phrases, phishing elements.

  • Expert methods. These methods allow analyzing text and service data of email messages. The following methods are included:
    • Spam rate. The option detects if messages are spam or potential spam based on a specified spam rate.
    • Heuristic analysisAnti-Spam analyzes messages using heuristic rules. Heuristic analysis is always enabled. You can find detailed info about heuristic analysis in KB6324.
    • Image recognition (GSG technology)GSG technology to detect graphic spam.
    • Analysis of attachments in RTF formatAnti-Spam analyzes documents attached to messages checking them for spam signs.
    • Self-training text recognition algorithm (iBayes)iBayes algorithm detects whether a message belongs to useful mail or spam based on the frequency of words typical of spam in its text. You should train the iBayes algorithm before you use it.

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Security levels

Kaspersky Lab specialists distinguish three security levels: 

  • High. This security level should be used if you receive spam frequently; for example, while using free mail services. When you select this level, the frequency of false positives rises: that is, useful mail is more often recognized as spam. When analyzing a message for spam the Anti-Spam component calculates the potential rating:
    • If the rating exceeds 50 but does not reach 80, the message is considered to be potential spam.
    • If the rating exceeds 80, then such message is labeled as spam. On this security level attachments in .rtf format are also analyzed, i.e. Anti-Spam additionally analyzes files attached to the messages for the spam presence.

  • Recommended. This security level should be used in most cases. When analyzing a message for spam the Anti-Spam component calculates the potential rating:
    • If the rating exceeds 60 but does not reach 90, the message is considered to be potential spam.
    • If the rating exceeds 90, then such message is labeled as spam.

  • Low. This security level should be used if you rarely receive spam, for example, if you are working in a protected corporate email environment. When this level is selected, spam and potential spam messages are less frequently recognized. When analyzing a message for spam the Anti-Spam component calculates the potential rating:
    • If the rating exceeds 80 but does not reach 90, the message is considered to be potential spam.
    • If the rating exceeds 99 out of 100, then such message is labeled as spam.

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Applies To:

  • Kaspersky Internet Security 2012
  • Windows