YouTube celebrated its seventh birthday by saying it has hit fresh milestones in terms of its offerings and the amount of time spent on the video-sharing website.

"Today 72 hours of video are uploaded to the site every minute," the Google-owned website said in a blog post Sunday.

Microsoft's upcoming Windows 8 series -- featuring an upgraded cloud computing service -- marks a "rebirth" of its operating systems, chief executive Steve Ballmer said Tuesday.

Ballmer described Windows 8 as the "deepest, broadest and most impactful" Windows software ever created by the U.S. tech giant, after the current Windows 7 sold at unprecedented rates to businesses.

The U.S. Justice Department on Monday acknowledged an intrusion in its computer network as the notorious hacker collective Anonymous claimed to have obtained large amounts of data from it.

"The department is looking into the unauthorized access of a website server operated by the Bureau of Justice Statistics that contained data from their public website," a statement sent to Agence France Presse said.

A U.S. judge on Monday said a Kodak patent allegedly infringed upon by Apple and Blackberry-maker Research In Motion (RIM) was not valid, dealing another blow to the struggling photography pioneer.

The preliminary ruling by International Trade Commission Judge Thomas Pender holds that neither Apple nor RIM infringed on Kodak's intellectual property by using the technology in some of their gadgets.

The European Union says Google Inc. must in "a matter of weeks" outline steps it is willing to take to ease concerns about alleged abuses of its dominant position in the online search market.

EU antitrust chief Joaquin Almunia said Monday that after a 1 ½ year investigation it had pinpointed four specific areas of concern and insisted the problems needed to be dealt with swiftly.

Alibaba, China's top e-commerce player, will re-purchase a 20-percent state in itself from U.S. portal Yahoo! for at least $7.1 billion, the companies announced Sunday.

"At the minimum price and assuming the initial repurchase of the full 20% stake, Yahoo! would receive from Alibaba consideration of approximately $7.1 billion, composed of at least $6.3 billion in cash proceeds and up to $800 million in newly-issued Alibaba preferred stock," the firms said in a statement.

Yahoo! stock price climbed Friday on renewed rumors that it was close to a multibillion-dollar deal to sell half of its stake in Alibaba.com back to the Chinese online shopping portal.

Yahoo! shares were up nearly four percent to $15.42 on the Nasdaq exchange by the close of trading due to unconfirmed reports that the only hurdle remaining was for the boards of the companies to sign off on the deal.

A U.S. commission on Friday sided with Microsoft by moving to ban the import of Android-powered Motorola smartphones based on patent infringement complaints by the software colossus.

The ruling issued by the International Trade Commission (ITC) will take effect in late July if President Barack Obama does not overrule it.

Facebook on Friday is to make the richest-ever share offering for a technology firm, raking in billions of dollars it could wield to dethrone Google as king of the Internet.

Facebook stock priced at $38 per share was to begin trading under the symbol "FB" on the Nasdaq, giving the world's leading social network a dizzying value of $104 billion at its initial public offering (IPO) of stock.

Three Russian computer whizzes were crowned the world's top collegiate programmers Thursday, when they clobbered 111 other teams from across the globe to win the 36th annual "Battle of Brains" in Warsaw.

Students Eugeniy Kapun, Mikhail Kever and Niyaz Nigmatullin from St. Petersburg State University of IT, Mechanics and Optics managed to solve nine of 12 problems in the allotted five hours, displaying the mental gymnastics required in the field.