Talkback - Dark web and private information safety

Australian Federal Police are to investigate claims that a vendor on the so-called "dark web" is selling Medicare card number. But what is dark web? How can we find out if our information on the internet is safe or not? Ivan and Selina have asked KK Fung to explain all the question in regarding dark web and online private information safety.

Hacker gain access Source: flickr/CafeCredit.com