[DLINK] Avast! antivirus 4.8.1229 - Diệt Virus Hàng Đầu

**markhieu** · 22-07-2008 10:40 AM

Avast! 4 Professional Edition represents the best antivirus protection available and can be downloaded and used free of charge for a 60-day trial period. At the end of the trial period, a license key must be purchased, which will be valid for a further 1, 2, or 3 years. avast! 4 Professional Edition comes with anti-spyware, anti-rootkit and strong self-protection built-in. It is designed to protect your valuable data and programs, as well as keep itself up-to-date and has the kind of built-in features that many vendors charge for additionally, or don't include at all.

All-inclusive, comprehensive protection avast! 4 Professional Edition includes ANTI-SPYWARE protection, certified by the West Coast Labs Checkmark process, to protect against the latest spyware threats and ANTI-ROOTKIT DETECTION based on the best-in class GMER technology, built into the scan engine.

Simple to use and fully automated - Automatic incremental updates provide real-time protection of your system, including web surfing. We've made avast! antivirus as simple to use as possible, while allowing full control of your security.
Tried and Trusted - With over 60 million users of avast!, you can rest assured that you are using one of the most tried and trusted antivirus products in Windows security. avast! supports more MS Windows versions (from Windows 95 to Vista 64-bit) than any other anti-malware product.

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**markhieu** · 25-07-2008 10:35 PM

Avast Professional Edition is a collection of award winning, high-end technologies that work in

perfect synergy, having one common goal: to protect your system and valuable data against

computer viruses. It represents a best-in-class solution for any Windows-based workstation.

This page demonstrates its most important features and provides links to further resources.

Features:
- Antivirus kernel
- Simple User Interface
- Enhanced User Interface
- Resident protection
- Script Blocker (Professional Edition only
- P2P and IM Shields
- Network Shield
- Web Shield
- Automatic updates
- PUSH updates
- Virus Chest
- System integration
- Command-line scanner
- Integrated Virus Cleaner
- Support for 64-bit Windows / Vista
- Internationalization

*** Antivirus Kernel
New version of avast! antivirus kernel features outstanding detection abilities, together with

high performance. You can expect 100% detection of In-the-Wild viruses (the ones what are

really spreading amongst people) and very good detection of Trojan horses, all that with only a

minimum number of false alarms.
The kernel was certified by ICSA; it frequently takes part in the tests of Virus Bulletin

magazine, often yielding the VB100 award.
*** Simple User Interface
Simple User Interface is used to start on-demand scanning, work with the results, change

various options etc. Basic resident protection settings can be modified here. Simple User

Interface is the main applicationof avast! 4 Home Edition. You can start additional avast!

modules from here, such as the Virus Chest, Updater or Log Viewer.
*** Enhanced User Interface
Unlike the Simple User Interface, the scanning is performed by so called “tasks”. First, you

define a task, including various parameters - areas to scan, what to scan, how to scan, etc.

Having the task, you can (possibly repeatedly) run it. Each task generates a list of results; you

can work with them later.
*** Resident protection
Resident protection, i.e. the real-time protection of the computer, is one of the most important

parts of an antivirus program today. avast! features a powerful resident module that is able to

detect the virus before it has any chance to infect your computer.
E-mail protection consists of two independent modules; first, there is a generic scanner

working on the SMTP/POP3/IMAP4 protocol level. It is capable of protecting any existing e-mail

client that uses these protocols. Second, there is a special plugin for MS Outlook only; it is

completely transparent, requiring no special settings.
New feature of version 4 is heuristic analysis of e-mail scanners. It is extremely useful in

protecting against new, unknown viruses and worms that are not possible to detect by the

usual means. The heuristic module performs a thorough investigation of every e-mail message

and watches for suspicious signs that might announce virus presence. When the number of

those signs exceeds the user-defined level, the message is considered dangerous and the user

is warned.
*** Script Blocker
The resident protection of the Professional Edition includes an additional module, not contained

in the Home Edition - Script Blocker. This module watches all the scripts being executed in the

operating system (so called WSH scripts - Windows Scripting Host). It also scans all the scripts

run as a part of a web page within your web browser (Internet Explorer, Netscape Navigator

and Mozilla).
*** Automatic updates
Automatic updates are another key point in virus protection. Both the virus database and the

program itself can be updated automatically.
*** PUSH updates
A special feature of the Professional Edition are PUSH updates. It is a dramatic change in the

philosophy of updates. Usually, every installed program checks every now and then whether a

new version is available. PUSH updates, however, are initialized by our server; they result in

your computer quickly responding and performing the necessary update. The system is based

on the SMTP protocol, i.e. on usual e-mail messages. The updates itself are controlled by the

avast! resident e-mail providers (MS Outlook and Internet Mail).
*** Virus Chest
The main properties of the Virus Chest are complete isolation from the rest of the operating

system (no outside process, i.e. no virus either, may access the files inside) and the fact that

the files inside the Chest may not be run (i.e. there is no danger in storing viruses there).
*** System integration
avast! antivirus features outstanding integration into your system. The scanning can be started

directly from Windows Explorer, by clicking a folder or a file with your right mouse button and

selecting the corresponding choice from the menu.
Another interesting feature is a special screen-saver that performs scanning for viruses during

its run-time. avast! antivirus works together with your favorite screen-saver, so you don’t have

to change to anything you wouldn’t like.
Another new option is the boot-time scan (Windows NT/2000/XP/.NET only). It is important in

the case that a virus is suspected to be active on your computer. The boot-time scan is

performed before the virus may get activated, so the virus cannot influence the scanning in any

way.
*** Command-line scanner
Experienced users may like another Professional Edition feature - command-line scanner. The

scanning can be controlled by many arguments and switches; to use as a pipe****, a special

STDIN/STDOUT mode is available.
The module is intended to be used in BATCH programs. Its output is the same as the output

from the Enhanced User Interface tasks (including the report files).

Changes in Version 4.8.1227 (July 19, 2008):
* improvements in some unpackers (WinExec, SFX CAB, LHARC, ZOO)
* check for critical system files is now performed even in the on-access scanner (as a

prevention of false positives)
* command line scanner (ashCmd.exe): fixed displaying of directory count
* Windows Vista: during a scan of system drive, duplicate entries are now handled correctly

(symlinks)
* Explorer extension process (ashQuick.exe) now ends immediately after aborting a scan
* fixed a bug in SMTP alerts (adding of random characters to the address)
* verification of digital signatures now fixed even for the on-access scanner (Windows Vista

and Windows XP x64)
* fixed the setting to disable checking of infected files during on-demand scans
* Enhanced UI: it is no longer possible to delete a default task by using the Delete key
* solved a synchronization problem that could potentially lead even to a hang of an avast

component (e.g. the Outlook plugin)
* Windows Vista SP1: solved an issue in the kernel driver aswSP.sys (problems during system

shutdown)
* added a workaround to a compatibility problem with NComputing NCT
* Standard Shield: improved handling of exceptions
* improvements in the rootkit submission system
* mail scanner: fixes in IMAP handler (Thunderbird)

Homepage - http://www.avast.com

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