I recently discovered a very good TED presentation by James Lyne, it is definitely a goodie. In his presentation, “Everyday cybercrime – and what you can do about it” https://www.ted.com/talks/james_lyne_everyday_cybercrime_and_what_you_can_do_about_it he provides an excellent introduction into internet security. His entertaining style fits well with the content and the 17 minute presentation covers key material. This should be on everyone’s play list as he debunks common myths about cybercrime. A Sophos page with some helpful followup tips can be found over at https://sophos.com/wifi with the emphasis wifi services.