Medibank, Optus, Woolworths data hacks show how a 'decade of anti-security policy' is putting Australia at risk, experts say

Millions of Australians have had a bad run with their personal data lately.

Whether it's telecommunications companies like Optus, private health insurers like Medibank, massive online retailers like MyDeal, or smaller online wine sellers like Vinomofo — hackers are getting hold of our data regularly.

With all this going on, you might be left wondering what exactly the hackers are doing with your data and how it could affect you.