Gregg Keizergkeizer@computerworld.com, Computerworld

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Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld.

Mozilla retires Firefox 4 from security support

Unnoticed in the Tuesday release of Firefox 5 was Mozilla's decision to retire Firefox 4, the browser it shipped just three months ago.

Mozilla ships Firefox 5, holds to new rapid-release plan

Mozilla on Tuesday delivered the final version of Firefox 5, the first edition under the new faster-release regime it kicked off earlier this year.

Researcher: Attackers exploit latest Flash bug on large scale

Hackers are aggressively exploiting a just-patched Flash vulnerability "on a fairly large scale," according to a Shadowserver Foundation researcher.

Mozilla to add built-in PDF viewer to Firefox

Mozilla is working on a project that will add PDF rendering to Firefox using HTML5 and JavaScript, eliminating the need for users to run Adobe's own plug-in.

Adobe patches second Flash zero-day in 9 days

For the second time in nine days, Adobe patched a critical vulnerability in Flash Player that hackers were already exploiting.

Google pulls more malware from Android Market

Google removed more malware-infected applications from its Android Market last week, according to a security researcher.

Mozilla gets tough on Firefox memory leaks

Mozilla will try to plug more memory leaks in Firefox with a new, aggressive approach that relies on weekly bug triage meetings.

Analyst frets download-only distribution for Lion will hurt retailers

Apple's decision to sell the Mac OS X Lion upgrade through its own Mac App Store won't hurt the company's bottom line but will certainly impact traditional retailers, NPD Group says.

Apple slams Amazon's Android e-store as 'inferior'

In court documents, Apple called Amazon's Appstore for Android "inferior" as it urged a federal court to block the online retailer from using the term "appstore."

Hackers exploit Flash bug in new attacks against Gmail users

Adobe confirmed that the Flash Player bug it patched Sunday is being used to steal login credentials of Google's Gmail users.

Apple takes control of iCloud.com domain

Apple took administrative control of the iCloud.com domain less than a week before CEO Steve Jobs is to unveil his company's new cloud-based service.

Google shuts off Chrome access to offline Gmail

Google has dropped offline Gmail support in several operating systems until this summer, when HTML5 upgrade is released.

Mozilla delivers Firefox 5 beta on schedule

Mozilla has shipped the beta of the Firefox 5 browser as it moves to a more frequent release schedule.

Microsoft links fake Mac AV to Windows scareware gang

Microsoft said this week that it has evidence of a link between the fake security software now plaguing Mac users and a hard-charging family of similar software on Windows.

Security researcher: Mac App Store too slow to update

Apple's Mac App Store puts users at risk because it's slow to update vulnerable software, a security researcher said Wednesday.