User manual GRISOFT AVG 8.5 ANTI-VIRUS PLUS FIREWALL V 8.5 FOR WINDOWS

[. . . ] AVG 8. 5 Anti-Virus plus Firewall User Manual Document revision 85. 8 (26. 10. 2009) Copyright AVG Technologies CZ, s. r. o. All other trademarks are the property of their respective owners. Created This product This product This product uses RSA Data Security, Inc. MD5 Message-Digest Algorithm, Copyright (C) 1991-2, RSA Data Security, 1991. [. . . ] For your own safety, you will not be allowed to visit this page. The linked page is not accessible, and so could not be scanned. Hovering over an individual rating icon will display details about the particular link in question. Information include additional details of the threat (if any), the IP address of the link and when the page was scanned by AVG: 10. 7. 4. AVG Active Surf-Shield This powerful protection will block malicious content of any webpage you try to open, and prevent it from being downloaded to your computer. With this feature enabled, clicking a link or typing in a URL to a dangerous site will automatically block you from opening the web page thus protecting you from inadvertently being infected. It is important to remember that exploited web pages can infect your computer simply by visiting the affected site, for this reason when you request a dangerous webpage 63 containing exploits or other serious threats, the AVG Security Toolbar will not allow your browser to display it. If you do encounter a malicious web site, within your web browser the AVG Security Toolbar will warn you with a screen similar to: If you still wish to visit the infected page, a link to the page is available on this screen, but continuing to these pages in not recommended! 10. 8. Web Shield Principles Web Shield is a type of a real time resident protection; it scans the content of visited web pages (and possible files included in them) even before these are displayed in your web browser or downloaded to your computer. Web Shield detects that the page you are about to visit includes some dangerous javascript, and prevents the page from being displayed. Also, it recognizes malware contained in a page and stops its downloading immediately so that it never gets to your computer. Note: AVG Web Shield is not intended for server platforms! 10. 8. 2. Web Shield Interface The Web Shield component's interface describes the behavior of this type of protection. Further you can find information on the component's current status (Web Shield is active and fully functional. ). In the bottom part of the dialog you will then find the elementary editing options of this component's functionality. 64 Basic component configuration First of all, you have the option to immediately switch on/off the Web Shield by checking the Enable Web Shield item. This option is enabled by default, and the Web Shield component is active. However, if you do not have a good reason to change this settings, we recommend to keep the component active. If the item is checked, and the Web Shield is running, more configuration options are available and editable on two tabs: Web - you can edit the component's configuration regarding the scan of the website content. The editing interface allows you to configure the following elementary options: o Web protection - this option confirms that the Web Shield should perform scanning of the www pages content. Provided this option is on ( by default), you can further switch on/off these items: Check archives - scan the content of archives possibly included in the www page to be displayed Scan Potentially Unwanted Programs - scan potentially unwanted programs (executable programs that can operate as spyware or adware) included in the www page to be displayed 65 Use heuristic analysis - scan the content of the page to be displayed using the heuristic analysis method (dynamic emulation of the scanned object's instructions in a virtual computer environment see chapter Anti-Virus Principles) Maximum file size to be scanned - if included files are present in the displayed page you can also scan their content even before these are downloaded to your computer. However, scanning of large files takes quite some time and the web page download might be slowed significantly. You can use the slide bar to specify the maximum size of a file that is still to be scanned with Web Shield. [. . . ] Typically, it does not include any changes to the code and updates only the definition database. This update should be applied as soon as it is available. Program update contains various program changes, fixes and improvements. When scheduling an update, it is possible to select which priority level should be downloaded and applied. 14. 2. [. . . ]