Today's Tech: Cameron threatens Guardian for 'risking trust-based' US relationship and Apple Q4 profits fall despite new iPhones

Apple has released its financial results for the fourth quarter of the fiscal year. The Cupertino-based company posted quarterly revenue of $37.5 billion (£23.3 billion) and quarterly net profit of $7.5 billion (£4.66 billion). After a quarter that saw the release of two new iterations of the company's most popular products – the iPhone 5S and 5C in September, and the iPad Air and iPad mini with Retina earlier this month – Apple made a strong showing in sales. Apple's stock prices still took a hit though, as the company reported the third consecutive drop in quarterly net earnings. This quarter's profits of $7.5 billion (£4.66 billion) paled in comparison to 2012's fourth-quarter, in which Apple raked in $8.22 billion (£5.1 billion).

David Cameron has threatened the Guardian with legal action in an effort to prevent it from publishing further leaks from Edward Snowden. Singling out the Guardian in a statement to MPs on Monday, the Prime Minister urged the newspaper to show "social responsibility" when reporting on revelations about GCHQ, or else risk "injunctions or D-Notices or other tougher measures." Cameron said, "If they don't demonstrate some social responsibility it would be very difficult for the government to stand back and not to act." He also argued that the continued publication of such material by The Guardian and other newspapers would affect the UK's relationship with the United States. "The UK has a very strong, long standing trust based relationship with the United States," he said, "not least as part of the 'Five Eyes' partnership."

Microsoft shareholders have been recommended by proxy advisory firm Glass Lewis to vote against the re-election of lead independent director John Thompson, due to a conflict of interest. Thompson is currently in charge of the company's efforts to find a new chief executive officer, as well as being employed as the CEO of cloud-computing firm Virtual Instruments. Virtual Instruments supplies software licences and hardware devices to Microsoft, and it is here that the potential conflict arises. Last year, Virtual Instruments was paid $2.3 million (£1.4 million) by Microsoft, however Microsoft has stated that these purchases were negotiated "at arm's length." Despite this assurance from Microsoft, Glass Lewis circulated a note to shareholders on Monday, classifying Thompson as an "affiliated" director as opposed to an independent one.

Google subsidiary Motorola has revealed that it is working together with startup Phonebloks on a modular smartphone that could be dismantled by the user and put back together with different parts. Project Ara, as the initiative is called, is a scheme designed to test the viability of the Phonebloks concept: "a free, open hardware platform." It uses the idea of the online app store, and applies it to the components of the phone itself. The Ara will have removable modules that allow users to customise, replace or upgrade parts of the phone without buying a new one.Motorola claims it wants to give users to ability "to decide what your phone does, how it looks, where and what it's made of, how much it costs, and how long you'll keep it." For instance, a user who wants to take high-quality photos on their phone could invest in a powerful camera module, while users who don't care so much could save the money.