Today's Tech: Samsung Galaxy Mega smartphones confirmed, Oxford University cyber security centre unveiled, HTC First reviewed

Samsung appears well and truly committed to its ‘phablet’ line having today confirmed the launch of two more giant smartphones – the Samsung Galaxy Mega 5.8 and Galaxy Mega 6.3. Just this morning rumours were circulating regarding the apparent specifications of the duo and Samsung has put an end to the speculation by confirming the latest additions to its wildly popular Galaxy series. The Mega 5.8 and Mega 6.3 monikers refer to their respective display sizes but there’s more to choose between the models than just real estate, so follow the link to see what these models are packing.

As the UK takes further steps towards shoring up its cyber defences, the IT security industry has come out in support of the latest government initiative to establish a new global cyber security centre at Oxford University. Unveiled yesterday, the Global Centre for Cyber Security and Capacity Building will bring countries together to develop strategies for dealing with online attacks, and Whitehall has pumped in £1 million to fund the centre for the next two years. Foreign Secretary William Hague says the Oxford base will act as "a beacon of expertise," but read on to see what the industry experts make of the new project.

The HTC First is not a "Facebook phone," but it's the closest the social juggernaut has come to creating one so far. There's no firm UK release date or price yet, but we do know that EE will have an exclusive on the device on its 4GEE plans when the handset is released at some point this summer. Anyway, potential UK arrival aside, is the HTC First any good? As it stands, this is just an average smartphone that comes preloaded with a shiny new app. However, odds are you'll be able to pick up, say, a Samsung Galaxy S3 for the same price, or likely less, than the First – and that will give you a bigger screen, a microSD card slot, a better camera, and Samsung's TouchWiz UI layer. Read on to find out more about why you might be better off opting for a high-end Samsung handset.

Bitcoin's meteoric rise may be over as quickly as it began. Just a day after units of the virtual currency were reaching $266 (£170), per trading site Mt. Gox, the bubble showed signs of popping violently for the virtual currency. Bitcoins were trading at a weighted average of $210 (£135) on the site as of Wednesday afternoon, but hit a low of $105 (£70) later in the evening. So how did this apparent currency bubble begin and why is it now bursting? Follow the link for a look at the global circumstances that may have contributed to its growth spurt.