As of March 2016, Google reports that over 50 million website users have been greeted with some form of warning that websites visited were either trying to steal information or install malicious software. In March 2015, that number was 17 million.
Besides the dangers of a data breach itself, there is also the risk of reputation and credibility loss to those who fall prey to an attack on their web site security. In addition, a hacker’s motivations are becoming not only financial however, but also political.
So overall, hackers can be hugely damaging to a business or institution, so unless web site security is a continuous effort, your organization could become the target of malicious attacks.