Today's Tech: new Nokia Lumia arrives, Android virus scare, and Samsung Galaxy S3 vs Galaxy S3 Mini

Released at the beginning of November, Nokia's Lumia 920 and Lumia 820 smartphones have been the subject of cautious praise and generally positive reviews since their arrival. But in a year that's seen the Samsung Galaxy S3 and iPhone 5 send both consumers and commentators into frenzy-mode, significantly penetrating the top end of the smartphone market was always going to be a tough proposition for the ailing Finnish firm.

Perhaps nailing the affordable middle order will do the trick? If so, the Nokia Lumia 620, which is now available for pre-order, could be the vehicle to drive success in the necessary segment. At £175 SIM-free via seller Unlocked Mobiles, the 620 becomes the cheapest Windows Phone 8 handset on the market, but does Nokia's newest model hits the right spots to make you part with your cash?

If not, then maybe it's the trusty Galaxy S3, or its diminutive relative, the S3 Mini, that tickles your fancy this Christmas? It's a predicament we've contemplated at ITProPortal HQ on a number of occasions, eventually deciding that the only fair way to decide this incestuous grudge match was by comparing the technical specifications of the two devices. Hence, today's Samsung Galaxy S3 vs Galaxy S3 Mini spec comparison is essential reading - for fans of the Korean firm's smartphone efforts, as well as people interested in high-end and mid-range handsets in general.

What's that, more headlines for the South Korean electronics giant? Afraid so, as well after a California jury found that Samsung infringed on a series of Apple-held patents, the two firms are still battling it out in court. The latest development comes as a further blow to the Korean firm, with Judge Lucy Koh rejecting Samsung's claim of juror misconduct. Koh swiftly denied a request for a new trial, countering the accusation of misconduct by saying it was doubtful that a juror had specifically tried to get selected because of a long-held grudge against Seagate, in which Samsung owns a 9.6 per cent stake. Read on for more details about Koh's decision.

Also in the handset realm, owners of devices running Google's popular mobile OS beware - a new Android virus has emerged whose modus operandi is to discreetly hijack your phone for the purpose of sending thousands of spam texts a day. The treacherous trojan application comes in the form of a duplicate of popular mobile games like Angry Birds and can be obtained via replying to an SMS message. The virus can also cover its tracks, making it difficult for Android owners to verify if their handset is infected by the parasitic botnet.

However, the era of infected mobile devices could soon be a thing of the past, with UK chip design titan ARM announcing a new joint venture, Trustonic, aimed at creating a robust security standard based at the silicon-level and existing in an "invisible area" theoretically immune to viruses, malware, and other malicious creations. Based on the firm's existing TrustZone technology, the project also includes Dutch firm Gemalto and is rounded out by German company Giesecke & Devrient. There's blue-chip backers galore as well, including Samsung, Cisco, and MasterCard, so it's not only a case of look out cyber criminals - chief rival Intel will also want to take note of the bold new venture.