Windows XP users will get another 18 months free of worry from security holes in Google's Chrome browser.

Shopping for a laptop or portable computer these days feels a lot like shopping for a toothbrush. There's an inexhaustible variety of sizes, colors and shapes. There are Windows tablets, Windows tablets that become laptops and then just your average Windows laptops. There's the iPad and then a massive selection of Android tablets. There's also Apple's family of MacBooks.

Luis Arbulu, a former Google business development and investment executive, has joined Samsung Electronics, Fortune has learned. He will be a Menlo Park-based director in Samsung's new Open Innovation Center, whose strategy includes making small early-stage investments into promising hardware and software startups.

Microsoft has posted the presentation it's used to explain its decision to acquire Nokia's mobile phone business and it reveals the key reason for the acquisition: hitting back at Apple and Google.

One of Google's top executives is leaving the company to join up-and-coming Chinese firm Xiaomi.

"Android's persistent fragmentation problem isn't just a Google problem, but a federal government concern too."