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Rajesh Mirchandani presents a series covering the latest developments and issues in the world of IT. He investigates just how many people are using unsecured Wi-Fi networks - challenging the users and businesses who are leaving themselves open to hackers involved in illegal activities, including downloading child pornography and online banking details theft. Rajesh also questions the use of Open Source software and considers the benefits and drawbacks for the voluntary sector where money saved on software may not offset the higher costs of IT support.