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Facebook has cautioned investors to expect slower user growth in the second half of the year.

Authors of a new book claim Oscar Pistorius spoke with his ex-girlfriend just hours before he shot and killed Reeva Steenkamp.

Mufid Elfgeeh, who lived and worked in New York, was an ISIS recruiter with plans for an attack on U.S. soil.

The massive $19 billion deal could be blocked by European regulators if they decide the deal could harm competition in the EU's common market.

HIke, India's rival to Facebook's Whatsapp, has raised $65 million from Tiger Global, Bharti Softbank

Tango’s transaction would involve early investors and shareholders selling shares to Ukrainian-born billionaire Len Blavatnik.

Facebook is expected to grow revenue by more than 55 percent in the second quarter.

Facebook said it aims to help the community by paying a local officer's salary, but it's hard to believe teens will agree.

Nawal Msaad, whose trial began Tuesday, is accused of funding terrorism after she was found trying to board a plane with €20,000 supposedly for Syrian rebels.

The increasingly strict social media blackouts in Iraq have forced citizens who wish to communicate online to download Tor, a software that makes it possible for anyone with the Internet to browse the Internet anonymously.

Acton otherwise struck an upbeat tone in his first public comments since Facebook's decision to acquire WhatsApp.

In February, Facebook said it would buy WhatsApp for about $16 billion in cash and stock. The deal is now valued at $19 billion.

Much like Snapchat, Blink helps users send content that can self-destruct as soon as it's consumed.

Facebook purchased WhatsApp for $19 billion, which currently has about 500 million active monthly users, compared to 355 million on WeChat.

The firm reported earnings per share of 25 cents on $2.5 billion of revenue, beating Wall Street estimates of 24 cents and $2.4 billion.

"If I cannot make money on handsets, I will not be in the handset business," BlackBerry CEO John Chen said.

Focus will be on the keyboard form-factor after the failed launch of the touchscreen Z10.

This isn’t the first time Facebook has acquired a tech business, but backers of the original Kickstarter are calling for the head of Oculus co-founder Palmer Luckey.

A volatile relationship is revealed in text messages exchanged between Oscar Pistorius and Reeva Steenkamp weeks before she was shot by the Olympian.

Every single company bought by Amazon, Google, Apple, Yahoo and Facebook in the last 15 years, in one interactive visualization.

After three years of civil war, many Syrians find that mindless cell-phone games provide much-needed distraction.

Voice calling would make WhatsApp more competitive to other mobile messaging apps that already feature voice calling.

Mxit, Kik and Viber are just a few WhatsApp competitors gaining popularity in global markets.

Facebook stock fell 5 percent Wednesday in after-hours trading and continued falling the next morning.

The WhatsApp team will get a nice payout from the Facebook deal, but it isn’t the only ones profiting from the purchase.

How will Facebook's latest purchase help the company spread its reach around the world and across devices?

Facebook's Mark Zuckerberg said WhatsApp will “complement our existing chat and messaging services to provide new tools...."

Rumors circulated for months about a possible purchase of WhatsApp by Google, but Facebook stepped in with a monster offer.

BlackBerry released a major update to BBM for Android and iPhone on Thursday that allows users to make voice calls over data connections. How is it?