Microsoft no longer supports XP users, but a host of antivirus products tested by AV-Test can still defend you from viruses.
This one-year, one-user license would normally cost you $24.99.
TrustGo is one of the most robust Android security apps we've seen, and it's completely free.
Pricing not available
Before it was flagged and removed, one of the most successful apps on Google Play for over a week was an "antivirus" app that did nothing other than change an image.
New testing outlines which Mac malware tools detect known threats the best.
A user posts a fake news piece to CNN's iReport news hub. It stays live for 22 hours before someone realizes it must surely not be true.
Zite will fade away as a standalone app, as Flipboard folds the rival's recommendation tech into its own news reader.
The new tool, built in conjunction with the social analytics company Dataminr, aims to discover breaking news soon after it happens.
Second screens like tablets are a "hacked attempt" to bring social or community interaction to TV, says CNN.com's general manager. And today's set-top boxes? Very primitive.
Even without a security suite, Windows 8 is safer than Windows 7. Adding just about any third-party security suite makes it even safer, a new study finds.