Christopher NullPCWorld Follow me on Google+

Christopher Null is a veteran technology and business journalist. He contributes regularly to PC World and Wired, and is a technology columnist for Executive Travel magazine.

BitDefender Internet Security 2011

BitDefender's overall protection levels are very good, but short of the topmost tier of products we reviewed.

G-Data Internet Security 2011

G-Data posted high marks for its ability to detect known malware; however, it didn't catch some new threats.

Battle of the Security Superpowers

We tested the 10 top security packages to see which ones can protect your data without overburdening your PC. Here are the exclusive rankings from the PCWorld Labs.

Eset Smart Security 4.2

Eset Smart Security 4.2 is speedy; unfortunately, the suite struggled at detecting and removing malware.

Simple Fixes for a Problematic PC

Need to troubleshoot an error-prone PC? Check out our easy-to-follow tips for dealing with audio problems, bad drivers, and more.


5-Minute Fixes for Windows PCs

Our experts offer 30 instant solutions to the most common problems affecting Windows 7, Vista, and XP.

Easy Fixes for Networking Problems

Having trouble connecting? Try these two simple approaches to sharing files and troubleshooting your network.

Fast Fixes for Office Annoyances

Frustrated by Office irritations? Follow our quick tips for adjusting settings in Word, Outlook, and more.


Quick Windows Fixes

Is Windows malfunctioning, sluggish, or in need of some tweaking? Our simple solutions will help you get the OS back into shape.


Get VIP Treatment When You Buy for Your Small Business

You could be missing out on preferred treatment and better deals when shopping for tech gear for your company. Here are some special deals that seven big retailers offer small businesses.

The 25 Worst High-Tech Habits (and How to Fix Them)

You’re doing a lot of stuff that's messing up your tech hardware--and your personal and professional life along with it. Here’s how to do better.


Save time and irritation by banning splash screens, intro movies, and nag screens.

Work Smarter In Windows: 55 Great Productivity Tricks

Do everything faster with these indispensable productivity tricks--including real-world advice from efficiency experts.


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Productivity measure, analysis and benchmark software