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

カスタマー エクスペリエンス担当の

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

ジェレミーです

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

今日の話題は 不正なソフトウェア

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

（マルウェア）からパソコンを 守る方法についてです

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.

（マルウェア）からパソコンを 守る方法についてです

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.

まずはマルウェアの 感染ルートですが

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.

ほとんどの場合 特定のサイトにアクセスして

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.

気付かないうちに インストールされます

These sites are often spammy.

良質なサイトが マルウェアに

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

悪用されていたり 悪質なサイトで

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

マルウェアが配布されて いたりします

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

正しいファイルを ダウンロードしたのに

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

実はマルウェアで 色々と

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.

問題を起こす 場合もあります

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

マルウェアが起こす 問題には

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

データの削除や 個人情報の盗み出し

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

カード番号やパスワードですね あとは迷惑メール送信

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.

ネットワークやパソコンへの 攻撃などです

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

マルウェアの兆候として 一般的なのが

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.

検索結果をクリックした時 思いがけないサイトに

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

移動するケースです

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

こういうサイトは大抵スパムです

Thanks, and safe browsing.

他にもポップアップや 不要なツールバーが