Don't-Miss Stories

New Mac malware variant surfaces, poses as PDF

A recent blog post from security research firm F-Secure announces the discovery of another up-and-coming Trojan horse, which poses as a PDF file but secretly installs a backdoor app.

Lion vulnerability lets attacker change user password

A vulnerability in one of Lion's command-line utilities allows an attacker to change the password of the currently logged-in user, without supplying the existing password.

Remains of the Day: All things to all people

Next-generation iPhone rumors are back: It'll run on Sprint! It'll have a cheaper version for the developing markets! Meanwhile, if you're reading this on your iPad in the bathroom, I just want to caution you to watch out for, uh, malware.

Spike in mobile malware doubles Android users' chances of infection

An explosion in mobile malware during the last six months has more than doubled the chance that a user's Android smartphone will become infected, according to Lookout Security.

Apple releases iOS updates to fix PDF vulnerabilities

Apple on Friday released updates for all its iOS devices to eliminate a PDF vulnerability first brought to its attention by the German government.

Intego launches VirusBarrier for iOS

Intego has launched VirusBarrier for iOS, which the company says in the first malware detection tool for iPhones, iPads, and iPod touches.

Researchers uncover more Android malware on Google's Market

Security researchers have found more malicious Android apps on Google's official download site and being spread through Chinese app stores.

Bugs & Fixes: Troubleshooting Apple's malware protection

Ted Landau describes how to keep your Mac's malware definitions up to date.

Weekly Wrap: Macworld's top stories for the week of May 29, 2011

Couple Memorial Day with "first day back at work after a three-day weekend," and it's easy to understand how you might have slacked off on your Macworld devotion. Let us help you catch up on what you may have missed.

Avast launches beta of free antivirus for Mac

Avast launched the beta of Avast Free Antivirus for Mac on Wednesday, the precursor to a major new free antivirus product that will replace its current paid offering on Mac OS X.