Apple on Tuesday announced that it beefed up its iMac all-in-one desktop computers with powerful new-generation Intel chips and high definition cameras.
The latest iMac computers were touted as 70 percent faster than their predecessors with a threefold improvement in graphics.

Computer security experts warned on Monday that online scammers have already started to exploit the death of Al-Qaeda leader Osama bin Laden to spread malware.
"Watch out for the links you're likely to come across in email or on social networking sites offering you additional coverage of this newsworthy event," Paul Ducklin of computer security firm Sophos said in a blog post.

BlackBerry maker Research In Motion (RIM) on Monday unveiled a pair of slim, powerful new handsets as their entries in the fiercely competitive smartphone arena.
BlackBerry Bold 9900 and 9930 models to hit the market mid-year will run on a new generation of the Canada-based firm's smartphone operating system.

A U.N. human rights expert has marked World Press Freedom Day by hailing the epoch-making power of the Internet and the role online social networking has played in uprisings in the Middle East.
"As one activist tweeted during the protests in Egypt, 'we use Facebook to schedule the protests, Twitter to coordinate, and YouTube to tell the world'," said Frank La Rue, U.N. special rapporteur on freedom of opinion and expression.

Users of Sony's PlayStation Network will have to change their passwords, the Japanese entertainment and technology giant said Sunday as it looks to boost security after its system was hacked.
Sony apologised for a security breach that compromised millions of users, and said that while it had no evidence that credit card information was stolen it could not rule it out.

The United States, Britain, Australia and Hong Kong are investigating the hacking and theft of personal data from Sony's PlayStation Network, which has 77 million users worldwide, Agence France Presse reported on Saturday.
The PlayStation Network and Qriocity streaming music service were shut down on April 20 after what Sony described as an "external intrusion" and remain offline as the company upgrades security and works with Federal investigators.

The agency in charge of the world's Internet addresses on Thursday appointed veteran hacker Jeff Moss to be its chief of security.
Moss, whose hacker name is Dark Tangent, is the founder of Black Hat computer security conferences as well as an infamous DefCon gathering of hackers that takes place annually in Las Vegas.

South Korea's Samsung Electronics on Thursday showcased an updated version of its Galaxy S smartphone designed to compete against rivals such as Apple amid a legal battle with the U.S. giant.
The world's second-largest mobile phone maker aims to sell at least 10 million Galaxy S2 smartphones after its international debut in early May, said Shin Jong-Kyun, president of the mobile business unit.

Microsoft has warned users of its Xbox Live online gaming service of possible attempts to steal personal data after the Sony PlayStation Network was hacked.
The problem appeared to be restricted to one game, the popular Modern Warfare 2, the U.S. computer giant said.

Northern California startup Viewdle on Wednesday released software that lets Android-powered smartphones recognize people's faces.
The free SocialCamera application available at the Android Market or online at viewdle.com/products/mobile was billed as the first of its kind for U.S. smartphone users.
