Preston Gralla

Contributing editor

Preston Gralla is a contributing editor for Computerworld, a blogger for ITworld, and the author of more than 45 books, including NOOK Tablet: The Missing Manual (O'Reilly 2012) and How the Internet Works (Que, 2006).

Think you're anonymous on the Web? Take this DNS leak test to make sure.

Is your Wi-Fi router hacker bait? This free tool lets you know.

Is your Wi-Fi router hacker bait? This free tool lets you know.

Is your home or work wireless network just waiting for an attacker to waltz in? I've found a free Android tool that gives you the lowdown about whether you're safe.

Review: Windows 10 Insider Preview -- a nearly finished OS

Review: Windows 10 Insider Preview -- a nearly finished OS

We look at the current build of Microsoft Windows 10 Insider Preview, which offers several improvements to what looks like a very promising OS.

How to check if you're vulnerable to the Logjam hack attack

How to check if you're vulnerable to the Logjam hack attack

Worried that you're vulnerable to Logjam, the latest hack that that lets attackers steal private information via your browser? Here's how to check whether you're at risk, and what Logjam does.

Kill bad ads with the new Adblock browser for Android

Kill bad ads with the new Adblock browser for Android

Are annoying, intrusive ads on the Web the bane of your existence? If you're an Android user, there's a new way to kill them, with the just-released Adblock browser.

5 secret tools for powering up Gmail

5 secret tools for powering up Gmail

Want to take back messages after you've sent them, protect yourself against phishing attacks, and more in Gmail? I'll show you how how with 5 secret Gmail tools.

Is this the best free Wi-Fi finder ever? It just might be.

Is this the best free Wi-Fi finder ever? It just might be.

Looking for the best Wi-Fi finder? I've found a new free one, and it might be the best one ever.

Europe's war against U.S. tech is wrongheaded

Europe's war against U.S. tech is wrongheaded

The European tech sector won’t catch up to the U.S. by having bureaucrats fight its battles.

Think Superfish-like adware and its cousins are dead? They're not. Here's how to kill them.

Think Superfish-like adware and its cousins are dead? They're not. Here's how to kill them.

Think Superfish-like malware and its relatives are dead? You're wrong -- it and its nasty cousins have injected ads into tens of millions PCs worldwide. Here's how to kill them.

How to kill all crapware and adware from Chrome

How to kill all crapware and adware from Chrome

Want to make sure Chrome is free from toolbars you don't want, browser-hijackers, and other crapware and adware? Check out this simple tool from Google that kills them all with a few clicks.

5 top ways to speed up your Wi-Fi network

5 top ways to speed up your Wi-Fi network

Want to speed up your Wi-Fi network? I've got five quick ways to do it.

5 ways to turn Chrome into a screamingly fast browser

5 ways to turn Chrome into a screamingly fast browser

Has Google Chrome become slow and sluggish for you? Here are five ways to turn it back into a blazingly fast browser.

Load More