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Today's Tech: all the latest Samsung Galaxy S4 rumours, HTC M7 to snub MWC, and Nokia Q4 2012 results

In the security world, 2012 could be seen as the year of the DDoS attack, with paralysing traffic bombardments - the staple online assault for any hacker - proving particularly popular in targeting the financial sector. As a result, Corero Network Security has conducted a study into the use of Distributed Denial of Service (to give it its full name) and found that as many as two thirds of financial organisations surveyed were hit by such an attack. What's more, DDoS attacks are expected to target finance companies of all size in 2013 - putting the vulnerable IT infrastructures of smaller businesses under threat.

It has been a long time coming, but after successive quarters in the red, Nokia has finally made a triumphant return to profitability. The Espoo, Finland-based firm has released its fourth-quarter fiscal results, which showed a £369.4 million profit on £6.8 billion worth of revenue in the final months of 2012. However, though Nokia shifted 4.4 million Lumia handsets during the quarter, its Nokia Siemens Network arm is responsible for the bulk of the revenue. "We are very encouraged that our team's execution against our business strategy has started to translate into financial results," said company boss Stephen Elop. Read on for more details from Nokia's Q4 2012 earnings results.

New reports claim to have pinned down details regarding the eagerly anticipated launch of the Samsung Galaxy S4. According to loose-lipped mobile industry "insiders", the Galaxy S4 will begin shipping in "week 16", aka mid-April in Gregorian terms. Further speculation has it that while a launch at February's Mobile World Congress could still be on the cards, a separate Samsung Mobile Unpacked event in March is also a strong possibility. London, New York, and Seoul - or all three, for that matter - are being mooted as host city candidates. Follow the link to see which metropolis is currently favourite.

In other mobile news, the HTC M7 smartphone will arrive in February - but it won't break cover at Mobile World Congress in Barcelona as many had thought. Social network activity by a source who claims "many years of work in the field" as well as "connections," has it that the M7 will now be released on 19 February - a week before MWC kicks off. According to the tweet-happy Italian insider, named Flavio, HTC's dedicated M7 launch will be held "probably in London."