The dangers of Android malware may be exaggerated, but you should still play it safe

Jagdish Shrimali asked if “it is necessary to install antivirus software on an android mobile device?”

It may not be necessary, but it’s still a very good idea. There’s definitely Android malware out there. While the level of the threat may be exaggerated, it’s really a matter of being better safe than sorry.

[Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector. Send your query to answer@pcworld.com.]

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How to run Android apps in Windows with a virtual machine

Anil Kumar wants to run Android apps on his Windows PC.

Android and Windows are two very different operating systems; programs designed for one won’t normally work on the other. To get around this, you need to set up an Android virtual machine (VM) on your PC. And as a general rule, setting up a VM can be a challenge.

[Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector. Send your query to answer@pcworld.com.]

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How to stop autoplaying HTML5 videos

P. Petropoulos blocked Flash videos from playing automatically without his permission. Now he wants to block HTML5 videos, as well.

On New Year’s Day, I told you how to block videos that play automatically when you visit a Web page. In fact, if such a video is starting to play right about…now, you may want to revisit that article.

My previous instructions concentrated on Flash videos, however, and Flash isn’t the only technology designed to annoy you with unwanted videos. So now I’ll tell you how to block HTML5 videos in Chrome and Firefox.

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Is your PC overheating? Here's how to tell

Hamed Bouattour worries that his PC is overheating.

Electricity, by its nature, heats things up. And heat, by its nature, can damage electrical circuits. Everyone with a computer has to work within that paradox.

I’ve written about overheated PCs in the past, but that was in the context of PCs that overheat so badly they shut down. But heat can cause problems before the crucial stage. Too much heat can reduce the CPU’s efficiency and wear out components faster than necessary.

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Read old emails from Outlook Express, Windows Mail, and Thunderbird

A friend of Russ and Sheila Stevens needs to access his late father’s Outlook Express messages—tricky since Outlook Express is no longer available. My answer covers more than Outlook Express.

Keeping old emails is pretty easy as long as you keep the same email client. Once you move from one mail client to another, however, you may need special software to access older mail.

[Have a tech question? Ask PCWorld Contributing Editor Lincoln Spector. Send your query to answer@pcworld.com.]

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7 steps for archiving your files for posterity

Doug Schofield asked about “long-term storage for my most important data: My family tree, irreplaceable photos, interviews, and audio recordings.”

I have family photos that go back more than 100 years. But I can’t be sure that, a hundred years from now, my descendants will have my photos.

No one knows for how long your files will be accessible. Both file formats and physical media can go out of fashion. And the media itself may not be stable over the long haul. I can’t guarantee anything, but these steps will increase the odds that your descendants can know their ancestors.

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Five precautions for avoiding malware when you download and install software

Roger Mccullough downloaded three separate programs, and Panda Anti-virus Pro found malware in all of them.

Downloading a program—especially one from an obscure publisher without a positive reputation—is something of a leap of faith. It’s a bit like letting a total stranger into your home.

But if you follow these five steps, you should be okay.

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