Updated from 12:33 p.m. EST to include information on Netflix in the eleventh paragraph and updated share prices.

NEW YORK ( TheStreet) -- Yahoo! ( YHOO) dipped 0.7% to $15.69 in Thursday's trade on reports that a hacking collective posted login credentials for thousands of user accounts.

In an email to The Street, Yahoo! confirmed approximately 400,000 Yahoo! and other company users' names and passwords were stolen on Wednesday. Less than 5% of the Yahoo! accounts had valid passwords, according to the Internet giant.

"At Yahoo! we take security very seriously and invest heavily in protective measures to ensure the security of our users and their data across all our products," Yahoo wrote. "We are fixing the vulnerability that led to the disclosure of this data, changing the passwords of the affected Yahoo! users and notifying the companies whose users accounts may have been compromised. We apologize to affected users. We encourage users to change their passwords on a regular basis and also familiarize themselves with our online safety tips at security.yahoo.com."

The company is also expected to name Ross Levinsohn as its permanent CEO.

SAP ( SAP - Get Report) climbed 2.94% to $58.54, after announcing record preliminary second-quarter results.

The Germany-based software company announced exceptional software revenue growth of 26% year-over-year to €1.06 billion. The growth was at the high end of SAP's forecasted range.

"Our record performance speaks for itself," explained Bill McDermott and Jim Hagemann Snabe, SAP's co-CEOs, in a statement released before market open. "We delivered double-digit growth in all regions driven by strong momentum from the core as well as SAP HANA, mobile and the cloud."
Microsoft ( MSFT - Get Report) shares dropped 2.29% to $28.63 on reports the Seattle, Wash.-based software giant is planning to restructure its marketing operation, a move that may include hundreds of layoffs.

Microsoft reports fourth-quarter earnings on Thursday, June 19. Analysts polled by Thomson Reuters expect the company to generate earnings of 62 cents a share on $18.16 billion in revenue.

Amazon ( AMZN - Get Report) fell 1.38% to $215.36 on Thursday -- just a day after the online retailer announced a gaming function for the Kindle Fire, and The Wall Street Journal reported the company was testing components for a smartphone.

Netflix ( NFLX - Get Report) shares rose 4.08% to $84.97, continuing a month-long run. The number of Netflix subscribers that use the provider for TV or TV-like programming has increased 8% in the last year, according to a recent Nielsen survey.

"The increase comes in the wake of Netflix not just inking partnerships to re-air programming, but also jumping feet first into production themselves, rolling out original content--like the 8 episode "Lillehammer" starring former Soprano sidekick Steven Van Zandt or the upcoming "Orange is the New Black," which is the first project from "Weeds" showrunner Jenji Kohan following the Showtime program's run," the survey said.

--Written by Nathalie Pierrepont in New York.

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