I'm Jeremy, a consumer experience specialist at Google.

我是 Jeremy，目前在 Google 擔任用戶體驗專員一職。

Today I'm going to talk to you about malicious software, also known as malware, and how you can protect your computer from infection.

今天我會談論「惡意軟體」， 並告訴大家保護電腦免於感染惡意軟體的方法。

First, let's talk about how you get malware.

首先，我們先來談談電腦會感染到惡意軟體的方式。

Malware is often installed on your computer without your knowledge when you visit certain websites.

當你在造訪某些網站時，惡意軟體常會在你不知情的情況下，安裝至你的電腦中。

Sometimes these are good sites that have been compromised by malware creators, and other times, they're simply bad sites built to distribute malicious software.

有些網站本身沒問題，純粹是遭到惡意軟體的開發者入侵，而有些網站本身就是用來散佈惡意軟體的工具。

Malware may also be installed when you download a file that appears to be legitimate, but is actually doing things that you didn't want or expect it to do.

惡意軟體也可能會偽裝成合法的檔案，而當你下載這類檔案時，惡意軟體就會安裝到電腦中，並擅自執行其他動作。

Malware has been known to do things like delete data on your computer, steal personal information such credit card numbers and passwords, send spam email, or even attack other networks and computers.

大家都知道，惡意軟體會刪除你電腦上的資料、竊取信用卡號碼及密碼等個人資訊、傳送垃圾郵件，或甚至攻擊其他網路及電腦。

One of the most common symptoms of malware that our users report is being taken to an unexpected site after clicking on a search result.

另外，使用者常跟我們反映，點選搜尋結果後，惡意軟體會把他們帶到一些莫名其妙的網站。

These sites are often spammy.

這些網站通常是垃圾網站。

But malware can also cause pop-ups, unwanted tool bars, and other strange behavior.

除了上述情況，惡意軟體也可能會導致彈出式視窗、顯示不需要的工具列及其他異常的行為。

To avoid malware from infecting your computer in the first place, it's a good idea to follow a few general guidelines.

想要避免電腦感染受惡意軟體，可以遵循一些通則。

First, upgrade your operating system and all of your software to the latest versions.

首先，將您的作業系統以及所有軟體升級到最新版本。

Check for new versions regularly, and if possible, turn on automatic updates.

定期檢查是否有更新版本，最好開啟自動更新的功能。

Be careful not to click on links that you don't know the destination of or download files from a source that you don't trust.

不要點選來路不明的連結，或是從不信任的來源下載檔案。

Similarly, before you download email attachments or click links in an email, make sure you trust the sender.

同樣地，當收到電子郵件時，除非你確定郵件來自信任的寄件者，否則千萬不要下載附件或點選其中的連結。

And finally, make sure that you're running up-to-date antivirus software.

最後，務必確認您使用的是最新的防毒軟體。

If you think you've already got malware, you can usually also use antivirus software to detect and remove it.

如果覺得電腦已被惡意軟體入侵，你也可以使用防毒軟體偵測並移除惡意軟體。

There are a number of programs that can remove the most common malware, although you may need to try more than one to catch every instance on your computer.

市面上有許多程式可以移除大部分常見的惡意軟體，但還是建議您使用不同的程式，徹底清除電腦上的惡意軟體。

And again, remember to keep all of your antivirus software up to date.

再次提醒您，請務必更新所有的防毒軟體。

If you do find a site in our search results that installs unwanted programs on your computer or redirects you somewhere that you did not intend to go, please let us know.

如果您在 Google 搜尋結果中發現某個網站會在電腦上安裝不需要的程式，或是將您重新導向非預期的網站，請通知我們。

Your report will help us improve the quality of our search results.

您的回報可以協助我們改善搜尋結果的品質。

To learn more about malware, please visit our help center.

如要進一步瞭解惡意軟體，請造訪我們的說明中心。

Thanks, and safe browsing.

感謝您，祝您瀏覽網站順心愉快！