There’s a big reason why phishing is a primary threat to businesses, and it’s because this method gives hackers a relatively risk-free way of gaining access to a network or other resources. Even being aware of the issue is often not enough to prevent it, as hackers are known to get quite aggressive and crafty with their phishing campaigns. If only a fraction of the 57 billion phishing emails that go out every year are taken seriously, hackers make quite a bit of profit off of users.