Summary: <p>Has your computer been hijacked by hackers and linked to a giant botnet — without your knowledge? Are you downloading apps you know little about — and unwittingly compromising your mobile phone? Threats to personal cybersecurity have never been greater, with a vast underground world of young hackers attacking people's devices out of malice or just for kicks. Tech Tuesday examines the perils of being connected and answers your questions about how to stay safe online.</p>
