Mike Lazaridis and Jim Balsillie, the co-chief executives of Research In Motion, have resigned following months of investor pressure for a change at the helm of the struggling BlackBerry maker.

Chief operating officer Thorsten Heins was named president and CEO of the Waterloo, Ontario-based RIM, which has been steadily losing market share to Apple's iPhone and handsets powered by Google's Android software.

Governments must strike a balance between policing the Internet to protect copyright and upholding freedom of expression, EU justice commissioner Viviane Reding said on Sunday.

Reding was reacting to a U.S. crackdown on hundreds of websites accused of offering pirated music or movies or counterfeit goods, as well as calls for new legislation to guard intellectual property.

The computer hacker group Anonymous attacked websites of Brazil's federal district Saturday as well as one belonging to a Brazilian singer to protest the forced closure of Megaupload.com.

Anonymous posted messages on Twitter describing attacks against hundreds of Brazilian sites that share the URL 'df.gov.br,' which are owned by the government of the federal capital in Rio de Janeiro.

Zynga, the social game company known for "FarmVille" and "Zynga Poker," is mulling a new market — online gambling.

Zynga Inc. confirmed Friday that it is in active talks with potential partners. San Francisco-based Zynga says it is speaking to the potential partners in order to "better understand and explore" the opportunity in online gambling involving real money.

Hong Kong Customs officers have raided offices, domestic premises and luxury hotel suites as part of a worldwide FBI Internet piracy investigation into file-sharing site Megaupload.com.

One hundred officers took part in the raids Friday which seized a large amount of digital evidence and uncovered about HK$330 million ($42 million) in suspected crime proceeds, Customs said.

For the communist cadre who has everything, a shadowy Chinese company is offering a $1,590 tablet computer called the "Red Pad" reserved for the nation's top officials.

The pricey device, whose existence was publicized by state media this week, has drawn mocking comparisons to Apple's iPad from Chinese netizens.

U.S. authorities have shut down one of the largest file-sharing websites and charged seven people with copyright crimes, sparking a retaliatory cyber-attack on the FBI and Justice Department websites.

The two government sites were up and running again early Friday after being shut down for several hours in an attack claimed by the "Anonymous" hacktivist group, which also briefly disabled music and recording industry websites.

Apple is taking aim at the textbook market.

The California-based gadget-maker unveiled a free iBooks 2 application for the iPad on Thursday that brings interactive textbooks to the popular tablet computer.

Twitter has acquired Summify, a Vancouver-based social news aggregator.

"We're extremely excited to announce that Summify has been acquired by Twitter!" Summify announced on its website on Thursday.

If a day without Wikipedia was a bother, think bigger. In this plugged-in world, we would barely be able to cope if the entire Internet went down in a city, state or country for a day or a week.

Sure, we'd survive. People have done it. Countries have, as Egypt did last year during the anti-government protests. And most of civilization went along until the 1990s without the Internet. But now we're so intertwined socially, financially and industrially that suddenly going back to the 1980s would hit the world as hard as a natural disaster, experts say.