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Yahoo (Nasdaq: YHOO), the No. 3 search engine, acknowledged a security breach of a Singapore-based server from which a hacker group may have extracted log-ins for as many as 450,000 user accounts.

Australian online electronics retailer Kogan says Microsoft Corporation (NYSE: MSFT) rectified an issue that knocked the company's home page off the Seattle-based software giant's Bing search engine.

After LinkedIn, now it's Yahoo that has reportedly fallen prey to a latest cyber attack, in which hackers of a hacking group named D33Ds Company claimed to have breached a Yahoo Voice server and posted over 453,000 user accounts and passwords, retrieved in plaintext.

No surprise: shares of the biggest search engine providers rose again in June while the weaker ones fell, market researcher comScore Inc. (Nasdaq: SCOR) said.

Did the world's largest software company remove the home page of an Australian online retailer from the results of its internet search engines in retaliation for the company's cheeky campaign to get people to use a better browser? Microsoft says no.

The tech world has been filled with high-profile lawsuits over the past week. Just as Internet giants Yahoo and Facebook settled their differences over alleged patent infringement, Apple is the latest company hit with a patent-related lawsuit.

The race to become Yahoo Inc's next chief executive appears to have come down to two candidates: current interim CEO Ross Levinsohn and Hulu CEO Jason Kilar.

The Magic are reportedly open to trade talks with the Nets.

Where will Howard play the 2012-13 NBA Season?

Charlie Sheen flipped out on his children while on the red carpet for Tyler Perry's new movie.It's not a surprise when the actor makes a scene while out in public, even if it's berating his own kids.

Yahoo (Nasdaq: YHOO), the No. 3 search engine, could settle its patent dispute with Facebook (Nasdaq: FB), the No. 1 social networking site, soon, lawyers told a federal judge in San Francisco.

Yahoo Inc. (Nasdaq: YHOO) and CNBC of Comcast Corp. (Nasdaq: CMCSA) said Wednesday they would partner to share content and create Web videos.

Those e-mails weren?t accidents, nor were the accompanying solicitations for funds and support, a new report by ProPublica found. The process is growing and there?s little place to hide.

Thursday will see a showdown over the near-term future of AOL (NYSE: AOL), the No. 7 website, which in its heyday was American Online, the biggest email provider, as well as a company big enough to swallow Time Warner.

Shares of AOL Inc. (NYSE: AOL), the No. 7 website, traded near their 52-week high Monday after activist investors Starboard Value Management won crucial backing to win seats on the board of directors.

Clive Chajet, celebrated brands consultant for companies, offers his free advice to Facebook, Yahoo and Hewlett-Packard about undoing the damage from recent mishaps: stick to business and the share price will follow.

It seemed like a move in the right direction for Yahoo back in November, when the company announced a family of new mobile products that would enrich the way users see and understand their news and entertainment content. But just shy of seven months after outburst of mobile and social applications and tools, Yahoo has decided to call it quits on arguably the biggest piece of that mobile package, a personalized magazine app called Livestand.

Yahoo Axis is on a mission to redefine the way users search for information. Offered by a free download, Yahoo Axis takes four major Web browsers - Internet Explorer, Firefox, Chrome, and Safari - and alters them to display search results in a more convenient and visual format.

Former CEO of Yahoo (Nasdaq: YHOO), the No. 3 search engine Scott Thompson resigned as a director of Spunk (Nasdaq: SPLK), a week after quitting his job at Yahoo.

The companies whose shares are moving in pre-market trading on Monday are: Ultra Clean Holdings, Seadrill, Yahoo, Frontline, ABB Ltd, Logitech International, United States Steel, Hewlett-Packard and ARM Holdings.

China's Alibaba Group and Yahoo confirmed Sunday night they have reached an agreement that will allow the two online media giants to eventually go their own ways. Alibaba initially will pay an estimated $7.1 billion in cash and preferred stock to Yahoo.

Shares of Yahoo Inc. (Nasdaq: YHOO), the No. 3 search engine, jumped as much as 6 percent in early trading Friday on a rumor it had finally made a deal to sell at least part of its 40-percent stake in China's Alibaba Group (Pink: ALBCF).

Elin Nordegren has reportedly broken up with her latest boyfriend. Nordegren had been dating financier Jamie Dingman for almost a year.

Yahoo (Nasdaq: YHOO), the No. 3 search engine, now has three new directors from Third Point Capital, the New York hedge fund that boosted its stake in the company.

Former CEO of Yahoo Scott Thompson will be paid $7 million in bonuses for five months of work. He will not receive a severance package. Thompson is succeeded by Yahoo CEO Ross Levinsohn.

Former Yahoo (Nasdaq: YHOO) CEO Scott Thompson quit in part because of a recent diagnosis of thyroid cancer, the Wall Street Journal reported.

Congratulations, the good guys finally won. You and your team, with help from other institutions, have ousted CEO Scott Thompson, elected three Third Point nominees to the board, removed another handful of management nominees and effectively control the company. Now what?

Yahoo CEO Scott Thompson has resigned from his position at the Sunnyvale, Calif., based company after investor's revealed a misrepresentation in his resume, but he isn't the only one. Check out some other CEO's who got caught with fixed resumes.

In the developing story that is the resignation of Yahoo CEO Scott Thompson, details have leaked about what the former CEO disclosed to the company's board of directors and several colleagues before the major announcement. According to The Wall Street Journal, Thompson revealed to his fellow Yahoo co-workers that he had been diagnosed with thyroid cancer.