Life and Style 'Angry Birds' and other mobile game users are reportedly leaving their personal information open to secret harvesting by government spies

Metadata from iPhone and Android apps can leak data about the phone's model, age of users, gender and location

The Obama administration and some of the biggest US technology firms have agreed a tentative deal that would allow the companies, including Google, to tell the public more about how the US Government collects information on their users

US makes deal with tech giants over disclosing details of data collection

The Obama administration and some of America’s biggest technology companies have agreed a tentative deal that would allow the firms – including Facebook, Google, Yahoo, LinkedIn and Microsoft – to tell the public more about how the US Government collects information on their customers.

BT boss Gavin Patterson: 'Customers can't expect total privacy'

Davos has kicked off with a controversial warning from BT chief executive Gavin Patterson that telecoms customers cannot expect total privacy.

Yahoo boss Marissa Mayer fires number two Henrique de Castro

Decision comes just 15 months after she poached him from rival Google

Lucky escape for Sydney passengers as metal bar is driven through carriage floor after train derails

Fire officers say no serious injuries have been reported

CES 2014: Yahoo rebrands Nick D'Aloisio's Summly app for mobile-news focus

Series of announcements by CEO Marissa Mayer strengthen Yahoo's focus on mobile products and creation of media content

Nick D’Aloisio sold his mobile phone app, called Summly, to Yahoo for £20m

In the Red review of the year: A teenage entrepreneur striking £20m deal with Yahoo was a highlight

Couldn’t you just pretend you’re going to buy a white boat (named Dirty Girl)?

Marissa Mayer has been tasked with trying to revive the technology company

Yahoo CEO Marissa Mayer rumoured to be interested in popular photo-sharing site Imgur

The site has more than 100 million users and would increase Yahoo's already substantial portfolio of social sites with young user bases

Dear Barry: Open letters have become the way high-flying individuals - and firms - get their message across

Open letters: To whom it may concern

It used to be just angry celebrities (and Moses) who wrote open letters. Now, even America's top businesses are taking the president to task, says Clare Dwyer Hogg

Google, Facebook and Twitter among top tech firms calling for sweeping reforms to US surveillance

The group, including Microsoft, Google and Apple, say that the balance has tipped "in favour of the state and away from the rights of the individual"

Marissa Mayer has been tasked with trying to revive the technology company and is splashing out on recruiting big-name journalists

Nikhil Kumar: Yahoo’s new direction since Marissa Mayer took charge to revive company by tooling it up for the mobile web is a gamble

Global Outlook: Making the most of new technological trends is only one part of the ex-Google executive’s plans

Don’t be a grinch – just squinch

There's a new facial expression in town...

The Yahoo! offices in Sunnyvale, California

Yahoo will encrypt user data as standard in response to NSA allegations

CEO Marissa Mayer announces greater encryption levels for users' data after reports of the US government gaining access to Yahoo data centers

Apple reveals global data requests by governments for users' data

Data shows that US makes the most requests, but exact numbers are still obscured due to 'gagging order'

Google celebrates 15th birthday with interactive piñata 'doodle'

Doodle challenges users to release as many virtual sweets as possible by thwacking a star-shaped piñata with a stick

Marissa Mayer and Mark Zuckerberg respond to critics over NSA compliance

Mayer stressed that Yahoo had no choice in complying with government requests; Zuckerberg says: "The government blew it"

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Joel Grey, now 82, won several awards for his role in Cabaret
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Isis hostage crisis: Militant group stands strong as its numerous enemies fail to find a common plan to defeat it

Isis stands strong as its numerous enemies fail to find a common plan to defeat it

The jihadis are being squeezed militarily and economically, but there is no sign of an implosion, says Patrick Cockburn
Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action

Virtual reality: Seeing is believing

Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action
Homeless Veterans appeal: MP says Coalition ‘not doing enough’

Homeless Veterans appeal

MP says Coalition ‘not doing enough’ to help
Larry David, Steve Coogan and other comedians share stories of depression in new documentary

Comedians share stories of depression

The director of the new documentary, Kevin Pollak, tells Jessica Barrett how he got them to talk
Has The Archers lost the plot with it's spicy storylines?

Has The Archers lost the plot?

A growing number of listeners are voicing their discontent over the rural soap's spicy storylines; so loudly that even the BBC's director-general seems worried, says Simon Kelner
English Heritage adds 14 post-war office buildings to its protected lists

14 office buildings added to protected lists

Christopher Beanland explores the underrated appeal of these palaces of pen-pushing
Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Scientists unearthed the cranial fragments from Manot Cave in West Galilee
World War Z author Max Brooks honours WW1's Harlem Hellfighters in new graphic novel

Max Brooks honours Harlem Hellfighters

The author talks about race, legacy and his Will Smith film option to Tim Walker
Why the league system no longer measures up

League system no longer measures up

Jon Coles, former head of standards at the Department of Education, used to be in charge of school performance rankings. He explains how he would reform the system
Valentine's Day cards: 5 best online card shops

Don't leave it to the petrol station: The best online card shops for Valentine's Day

Can't find a card you like on the high street? Try one of these sites for individual, personalised options, whatever your taste
Diego Costa: Devil in blue who upsets defences is a reminder of what Liverpool have lost

Devil in blue Costa is a reminder of what Liverpool have lost

The Reds are desperately missing Luis Suarez, says Ian Herbert
Ashley Giles: 'I'll watch England – but not as a fan'

Ashley Giles: 'I'll watch England – but not as a fan'

Former one-day coach says he will ‘observe’ their World Cup games – but ‘won’t be jumping up and down’
Greece elections: In times like these, the EU has far more dangerous adversaries than Syriza

Greece elections

In times like these, the EU has far more dangerous adversaries than Syriza, says Patrick Cockburn
Holocaust Memorial Day: Nazi victims remembered as spectre of prejudice reappears

Holocaust Memorial Day

Nazi victims remembered as spectre of prejudice reappears over Europe
Fortitude and the Arctic attraction: Our fascination with the last great wilderness

Magnetic north

The Arctic has always exerted a pull, from Greek myth to new thriller Fortitude. Gerard Gilbert considers what's behind our fascination with the last great wilderness