Avast! Free Antivirus 9.0.2011

Avast! Free Antivirus (Avast! 免費家用防毒)是一個擁有基本防毒功能以及反間諜的每費軟體。它可以掃瞄並防禦各種病毒、間諜軟體和各式的惡意程式。

• 全球最受信任的防毒軟體，主動保護幾乎 2 億台 PC、Mac 和 Android 裝置
• 將所喜愛的銀行或購物網站設定為在“虛擬視窗”中自動啟動，確保您所有敏感的財務交易處於私密狀態。
• 瀏覽器或 PDF 閱讀器等過時版本的應用程序，因而大多數病毒和惡意軟體威脅所利用的漏洞在較新版本上都得到修復。
• 掃瞄並防禦各種病毒、間諜軟體和各式的惡意程式。
• 自動檢測未知的Rootkit，在惡意程式執行之前先行阻止。
• 增加代碼模擬和啟發式引擎，兩大新功能。
• 檢查電腦可能不需要的程序。
• 不再重新掃瞄確定安全的文件，減少需要掃描的文件量。
• 行為、文件系統、郵件、網頁、P2P...等各種類型的防護。
• 遊戲模式，自動偵測全螢幕的應用程式停止彈出視窗訊息。
• 在多核心CPU上可以執行更快。

# Core product changes
* Fully rewritten the WebShield so that it now doesn't work as a "transparent proxy" anymore. I.e. no more routing of all HTTP traffic through the AvastSvc.exe process - which should hopefully result in no more conflicts with various firewalls (especially older firewalls that can't handle transparent proxies) and overall improvement in stability and performance. Besides that (and this is really exciting) it allows us to see and detect more threats (the original webshield had some limitations).
* The Firewall component (in IS and Premier) has also changed dramatically. More compatible with other applications, such as Java and various VPN services.
* The installer/updater has been improved to allow more reliable installation in case of infected machines. The installer is now protected by the avast self-defense driver from the very beginning, making it harder for active malware to kill it (if you have problems starting the installer in the first place, it may be a good idea to try to rename the executable to a random name first)
* The changes in the File System Shield's driver should result in faster performance, especially in the copy files and install programs scenarios.
* The Browser Cleanup tool to be able to rip off even the more stubborn toolbars and other "PUBEs" (Pontentially Unwanted Browser Extensions :))
* Fixed a whole bunch of bugs reported in the last couple of months. Especially if you encountered a problem with R1, I suggest you try this new version, chances are that the problem is resolved there.
* For trialware users, added an interactive tutorial that explains all the features of the product in a straightforward, concise manner.
# In addition to the core, there's two more things included in this version:
* Connectivity to the new avast! GrimeFighter product. GrimeFighter is our take on PC Optimization / tuneup and is the result of the Jumpshot acquisition that we did earlier this year. This will be a standalone product (sold separately) but has some connections into Avast. It is really a cool product (and I encourage everyone to give it a try) - technically, it's Linux based, although you wouldn't be able to tell as it's perfectly skinned and does a good job at hiding all the complexities.
* SafePrice is a new, optional module of the Avast browser plugins. It's designed to combine security (hence the "safe" part) with best deals (hence the "price") into one, easy-to-use module. It's pretty silent (almost invisible) unless you search for a specific product -- in which case, it would pop up a price comparison and allow you to pick one of the deals in the trusted stores. The feature can be turned on or off through the browser plugin settings.